1. What is the median of: 5, 10, 15?

2. What is the mean of a standard normal distribution?

3. What is true about these 5 numbers? -2, -1, 0, 5, 10

4. If a data set follows a normal distribution, approximately ___% of data falls within 1 standard deviation of the mean.

5. The number of cars that went through a car wash during the noon hour over each of the past 8 days are the following: 5, 9, 2, 3, 3, 9, 8, 6 What is the range of this data?

6. You flip an unbiased coin 2 times - what is the probability of getting 2 heads?

7. Discrete and continuous data are both forms of _______ data.

8. What is the average of the following 5 numbers? 1, 2, 3, 4, 10

9. What is the mode of: 5, 10, 10, 15, 17?

10. What is the value of the middle observation in a ordered set of numbers

11. The ______ describes the dispersion of a data set.

12. Which of the following is quantitative data:

13. A mean calculation is a part of _______ statistics.

14. Where would the outliers be if a distribution had a skewness of 0?

15. You flip an unbiased coin one time - what is the probability of getting tails?

16. The difference between the highest and lowest scores is called the ______.

17. The Square of the standard deviation is called

18. What is the mean of: 5, 10, 15?

19. A normal distribution generally takes the form of _______.

20. What is the median of the following 5 numbers? 1, 2, 3, 4, 10

21. True or false? Qualitative data is strictly numerical.

22. What power is used in the formula for variance?

23. What is the skewness of a normal distribution?

24. The average grade on a midterm exam in a math class is 72. The teacher feels this is too low, so they award 10 extra points to every student in the class. What is the new average grade for the class?

25. Two coins are tossed, what is the probability that two heads are obtained?

26. The, "null hypothesis," refers to

27. Your college professor standardizes everyone's test scores. Your standardized score is -1.35. Which of the following statements is true?

28. The median grade on a midterm exam in a math class is 72. The teacher feels this is too low, so they award 10 extra points to every student in the class. What is the new median grade for the class?

29. Which of the following is a measure of spread?

30. Which of the following is NOT a characteristic of a Normal distribution?

31. Let A be a normal distribution with a mean of 3 and B be a normal distribution with a mean of 17. What is the mean of A+B?

32. A forestry researcher recorded many variables on the trees of a large forest. These variables include the height (in meters), the diameter (in centimeters), the species (pine, oak, etc.), and if the tree had Dutch Elm disease. In this study which variables that were recorded were quantitative?

33. How can you convert a variance to a standard deviation?

34. Using previous games to predict the score of a game is an example of ________ statistics.

35. Bob is a high school basketball player, who is a 72% free throw shooter. Bob has missed his first four free throws of the game. What is the probability that Bob makes his fifth free throw?

36. Where would the outliers be if a distribution had a skewness of -50?

37. Over the last 360 days of winter in Raleigh, NC (5 winters) we have had snow on 36 days. What is the probability that we will have snow on any random winter day this year?

38. Which of the following is not a measure of spread?

39. What is the probability of rolling a fair dice and getting an even number?

40. You calculate the standard deviation of a data set and find that it is -1.23. From this you can determine which of the following is true?

41. Where would the outliers be if a distribution had a skewness of +1?

42. Suppose E is an event in a sample space S with probability .3. What is the probability of the complement of E?

43. What is true about these 5 numbers? -10, -5, 0, 1, 2

44. How is P(A|B) interpreted?

45. Symbolism: What does the small sigma represent (without any other symbols) in statistics?

46. _____ are collections of observations.

47. What is the difference between the mean and the median?

48. Where would the outliers be if a distribution had a skewness of +50?

49. A ______ is a numerical characteristic of a population

50. What is the probability of rolling a fair dice and getting a 1 and flipping a fair coin getting a head?

51. Suppose a fair die is tossed twice. What is the probability of rolling two fours?

52. What is expected value?

53. How do you calculate the Z-Score?

54. Symbolism: What does the x-bar represent (without any other symbols) in statistics?

55. Which plot is best use to display the relationship between a continuous dependent variable against a continuous independent variable

56. How can you convert a standard deviation to a variance?

57. The variable X is the value of an uneven dice after one roll. It produced the following probability distribution P(X): P(1) = 0.05 P(2) = 0.28 P(3) = 0.12 P(4) = 0.23 P(5) = ? P(6) = ? What is the probability that X = 5 or X = 6?

58. The variable X is the value of an uneven dice after one roll. It produced the following probability distribution P(X): P(1) = 0.05 P(2) = 0.28 P(3) = 0.12 P(4) = 0.23 P(5) = ? P(6) = ? What is the probability that X = 2 or X = 3?

59. The average price of a car in a used car lot is $18,000. These prices are Normally distributed with a standard deviation of $3,000. What is the probability that any random car is below $18,000?

60. What is the probability of rolling a fair dice and getting an even number and flipping a fair coin getting a head?

61. Which of the following is an example of mutually exclusive events?

62. Interpret an R-squared coefficient of .6 for a simple linear regression.

63. What is the most commonly used statistical measure of spread in a normally-distributed population?

64. When does a Type I error occur?

65. In a probability distribution, the second central moment can be another term for which of the following?

66. What is derived from the second moment of distribution?

67. Experts rank athletic teams 1 through 10. This is an example of ______ data.

68. Which one of these variables is a continuous random variable?

69. What is the median of the following 5 numbers? 10, 2, 4, 3, 1

70. Suppose E and F are mutually exclusive events in a sample space S with probabilities .4 and .3 respectively. What is the probability of their union?

71. The probability of a discrete value in a continuous distribution is equal to __?

72. Suppose c is a constant number. Calculate var(c).

73. What is the first moment of distribution?

74. _____ data is an example of nonmetric data.

75. Which of the following statements are true? 1. Categorical variables are the same as qualitative variables. 2. Categorical variables are the same as quantitative variables. 3. Quantitative variables can be continuous variables.

76. Which of the following would be appropriate for a z-test?

77. Which one of these variables is a binomial random variable?

78. What is the formula for the variance of a population?

79. Suppose you have generated this model to predict income: Income = 10 + .5(Years of Education), units are in thousands, ie 10.5 = $10,500. Interpret Beta1.

80. The center line inside a box plot typically represents the _____ in any instance.

81. A bag contains 4 balls (2 red and 2 blue). You pull out one ball at a time without replacement. What is the probability that the fourth ball chosen is a red ball?

82. A manager of a large bank wants to compute the average interest rates across all bonds that the bank invests in. The manager randomly sampled 127 bonds that the bank invests in and calculated the average interest rate over the past year of the sample was 2.47%. What is the parameter of interest in this study?

83. Which of the following is a characteristic of an F-distribution?

84. C(n,r) is equal to...

85. Symbolism: What does the Greek letter mu represent (without any other symbols) in statistics?

86. Which of the following statements are true about confidence intervals for means? 1. The center of the confidence interval is always 0. 2. The bigger the confidence interval, the smaller the margin of error. 3. The bigger your sample, the smaller the margin of error.

87. Which of the following is A test of normality?

88. Which of the following examples involves paired data?

89. When do you fail to reject the null hypothesis?

90. P(n,r) is equal to...

91. If you have a hypothesis test with a significance level of 0.05 and a p-value of 0.01, what is the result of your hypothesis test?

92. The median grade on a midterm exam in a math class of 60 students is 85. The teacher gives an additional 5 bonus points to the 3 students who scored the highest on the exam. What is the new median grade for the class?

93. P(A)*P(B)=P(A and B) What can you conclude about A and B?

94. Say 2 events satisfy the following equation: P(A intersect B) = P(A) x P(B). We say that events A and B are __.

95. Where would the outliers be if a distribution had a skewness of -1?

96. What is derived from the third moment of distribution?

97. Suppose A is always 3. Var(B)=4. What is Var(A+B)?

98. In hypothesis testing, which of the following statements is always true?

99. Suppose E and F are events in a sample space S. Suppose further that E has probability .2, F has probability .6, and the intersection of E and F has probability .1. What is the probability of the union of E and F?

100. An auto analyst is conducting a satisfaction survey, sampling from a list of 10,000 new car buyers. The list includes 2,500 Ford buyers, 2,500 GM buyers, 2,500 Honda buyers, and 2,500 Toyota buyers. The analyst selects a sample of 400 car buyers, by randomly sampling 100 buyers of each brand. Is this an example of a simple random sample?

101. What power is used in the formula for skewness?

102. What are the characteristics of the f-distribution.

103. Find the z-score: mean = 6, standard dev. = 2, observation = 7

104. The variance of X is 15. Y=X+5. What is the Variance of Y?

105. A card is drawn randomly from an ordinary deck of playing cards. You win a prize if the card is a heart or the card is an ace. What is the probability that you will win the prize?

106. What is the cumulative probability at +1 standard deviation, for a random variable with normal distribution?

107. What is the kurtosis of a normal distribution?

108. The preseason odds that the Hartford Whalers will win The Stanley Cup Championship are 1/4, and the odds are the same for the California Golden Seals. What is the probability that BOTH will win the championship?

109. For a random variable X, E[X]=3 and E[X^2]=14. Var[X]=?

110. What is synonymous with the coefficient of determination?

111. Which of the following is NOT a commonly used estimator in determining the parameters of an unknown probability density function?

112. Suppose E and F are mutually exclusive events in a sample space S. Suppose further that E has probability .3 and F has probability .4. What is the probability of the intersection of E and F?

113. Suppose E and F are events in a sample space S. Suppose further that E has probability .8 and F has probability .9. What is the largest possible value for the probability of the intersection of E and F?

114. What is homoskedastic?

115. C(n,0) = C(n,n)

116. What is the expected value of rolling an unbiased die (6 sided)?

117. For an airline, many times small cities have limited flights that go into their airports. To get a flight to Columbia, SC you must go through one of three cities: Raleigh, NC, Atlanta, GA, or Charlotte, NC. Two customers from Orlando, FL are trying to get to Columbia, SC with only one stop (one of the three above mentioned cities). Assume that they are equally likely to go through any of the above cities. What is the probability neither of the customers fly through Charlotte, NC?

118. Which of the following would be appropriate for ANOVA?

119. What is synonymous with the correlation coefficient?

120. How do you calculate the standard error of the mean? (obs. = observations, sqrt = Square Root)

121. Chi-square is used predominantly in _______ statistics.

122. Suppose E and F are independent events in a sample space S. Suppose further that E has probability .3 and F has probability .4. What is the probability of the intersection of E and F?

123. What is the probability that two six-sided dice will roll the same number?

124. What is the probability of rolling a seven on two six-sided dice?

125. For an airline, many times small cities have limited flights that go into their airports. To get a flight to Columbia, SC you must go through one of three cities: Raleigh, NC, Atlanta, GA, or Charlotte, NC. Two customers from Orlando, FL are trying to get to Columbia, SC with only one stop (one of the three above mentioned cities). Assume that they are equally likely to go through any of the above cities. What is the probability one of the customers fly through Charlotte, NC, while the other does not fly through Charlotte, NC?

126. If I tossed a fair coin 3 times, what is the probability of it landing on tails only once?

127. M=L+[d1/(d1+d2)], The M in the above equation represent?

128. Which should you use to analyze a continuous dependent variable against a categorical independent variable?

129. The variance of X is 3. Y=3X. What is the variance of Y?

130. Let X follow a Poisson distribution with a rate parameter of 7. What is Var(X)?

131. What is the coefficient of variation?

132. In a multiple regression model, what is the best way to test the joint significance of the independent variables?

133. What is the formula for the Pearsonian Coefficient of Skewness?

134. What does R^2 (R-Squared) calculate?

135. What is a Type II error?

136. Which of these linear regression models is quadratic?

137. What is the probability of drawing an Ace from a deck of cards that includes the two Jokers?

138. What formula is used to determine the probability of a series of outcomes WITH replacement?

139. Which statistic is not a measure of effect size?

140. What is another form of expressing beta1 in a simple linear regression? y=dependent variable x=independent variable

141. Which of the following numbers (measures of kurtosis of a distribution) would represent a platykurtic distribution?

142. Which of the assumptions is not one of the assumptions for creating a linear regression model (ie. Gauss-Markov Assumptions)?

143. The variance of X is 5 and the variance of Y is 8. What is the variance of X+Y?

144. A survey was conducted to find the average weight of students living in the dorms or a university. To help improve the accuracy of the study, an equal number of students were randomly selected from each dorm for the sample. This sample is an example of what?

145. Which of the following would be appropriate for a t-test?

146. Which of the following numbers (measures of kurtosis of a distribution) would represent a leptokurtic distribution?

147. What power is used in the formula for kurtosis?

148. P(X|Y)=.5 P(X)=.2 P(Y)=.4 What is P(X and Y),

149. A coin is tossed three times. What is the probability that it lands on heads exactly one time?

150. Event A and Event B are independent and mutually exclusive. True or False: The probability of A must be 0 or the probability of B must be 0.

151. What is the probability that a coin will land on the same side when flipped twice?

152. P(A|B)=.6 P(A)=.3 P(B)=.4 What is P(B|A)?

153. Suppose E and F are events in a sample space S. Suppose further that E has probability .8 and F has probability .9. What is the smallest possible value for the probability of the intersection of E and F?

154. Suppose E and F are events in a sample space S. Suppose further that E has probability .3, F has probability .4, and the intersection of E and F has probability .2. Find the probability of the intersection of E and (the complement of F).

155. Suppose X and Y are independent random variables. The variance of X is equal to 16; and the variance of Y is equal to 9. Let Z = X - Y. What is the standard deviation of Z?

156. A card is drawn randomly from a deck of ordinary playing cards. You win $10 if the card is a spade or an ace. What is the probability that you will win money from playing the game once?

157. Which of the following is NOT essential for multiple regression modeling?

158. What is the cumulative probability at -1 standard deviation for a normal distribution?

159. Suppose E and F are independent events in a sample space S. Suppose further that E has probability .3 and F has probability .4. What is the probability of the union of E and F?

160. Suppose E and F are events in a sample space S. Suppose further that E has probability .5, F has probability .6, and the intersection of E and F has probability .2. Find the probability of the union of E and (the complement of F).

161. Is it true that nCr = nC(n-r) ?

162. The Causal Research design is used when the .... factor about some phenomenon or issue is being researched.

163. Prior experience and situational analysis are important in making decisions when a person does not have enough information to calculate the probability of occurrence of an event.

164. Population parameters include the following except:

165. .... is one way to understand the relationship between two variables that occur at the same time.

166. ..... is the most frequent value that is present in your data.

167. A study finds that children who spend more hours in TV viewing score lower class grades in school. This correlation is an example of:

168. Arranging your target population in an ordered scheme from which participants or items are chosen at regular intervals is an example of:

169. When a researcher doesn't know much about a certain problem and wants to gain more information about it, which research design will he use?

170. The _____ is a useful tool for assessing whether the means of two groups of variable are statistically different from each other.

171. There are two ways to present categorical data. One is by way of graphs, the other is by way of .... .

172. When a person conducts analysis using data he or she has not collected, the source of such data is called:

173. Which one form(s) part of descriptive analysis?

174. While Scientific Research steps, a researcher has to construct a hypothesis soon after defining the problem

175. A sample of a population is:

176. The relationship between two variables is of two types. One is Linear, the other is:

177. Which sampling method solicits the opinions of pre-selected experts?

178. Which one can be used as source(s) of data collection?

179. Probability can be determined by:

180. If a company's production is consistently going down due to some reasons, which technique or method would you employ to analyze those reasons/causes?

181. Statistics is a branch of .... .

182. Probability of occurrence of a Type I error referred to as?

183. The population you are interested in studying is called:

184. Standard deviation is the most common measure of .... .

185. The components of Simple Linear Regression model include the following except:

186. Stem and leaf display is an example of:

187. When you are figuring out How to collect, process and analyze data, you are:

188. The following statements regarding a Hypothesis are true except:

189. Statistics can be divided into 2 broad sections. One is Descriptive Statistics, the other is:

190. In statistical analysis, central tendency points to the clustering of the data around a .....

191. Which data category uses numbers to indicate a classification?

192. Numerical data can be presented by way of which of the following:

193. Trying to learn more about a larger population from a small sample, is an example of:

194. Of the three Measures of central tendency, which one is the most sensitive to outliers?

195. .... is one of the basic methods of inferential statistics that helps a researcher determine the difference between a real and a random pattern in a data set.

196. Cluster sampling and Stratified sampling form part of Probability Sampling Methods.

197. Probability proves useful:

198. Cross tabulation of data is possible through the following:

199. The correlation co-efficient quantifies the strength of the relationship between two variables and the value of this co-efficient falls between:

200. Examples of Measures of central tendency include:

201. While accepting or rejecting a null hypothesis , ________ are the regions that help to arrive at a decision.

202. A good research plan should include the following except:

203. What will be the potential sampling frame(s) for a survey whose target population is infant children?

204. The advantage(s) of Scientific Research Method is/are:

205. Which graphical tool is used to arrive at decisions by presenting and comparing a number of competing alternatives?

206. The process in which data about the variables is collected and then predictions are made about future outcome is called:

207. Which one is not an example of hypothesis?

208. Commonly employed qualitative research methods include:

209. How is a Type II error symbolized as?

210. When the data values are tightly clustered around the mean, the bell shaped curve is:

211. In the Sampling Process, soon after identifying the sampling method comes the process of:

212. How many types of major sampling methods are there?

213. In correlation analysis, we designate one variable as an independent variable and the other as a dependent variable.

214. In a set of 40 General Knowledge questions 5 are based on International Relations. In a computer generated test only 30 of these 40 questions will be picked up. What is the probability of at least one of these 5 questions (on International Relations) being picked up randomly out of the selected 30?

215. Ordinal numbers or data are primarily concerned with:

216. The idea behind reviewing existing knowledge is:

217. It is important to categorize your data and data can be categorized into the following categories:

218. Find out the median of the following data set

219. Calculate the mode of these test scores.

220. In marketing research, which measure of central tendency is often used in a set of ordinal data?

221. Which is not a research ethic?

222. A .... is a graphic representation of data based on paired observations.

223. Compute the Range for the given hourly wages (in $) of janitors

224. Once a sample is drawn from the population, how close the sample is to the larger population is to be determined. This is known as:

225. Statistics help in making inferences and drawing conclusions. These conclusions in turn help in:

226. In which chart is the data organized in a descending order and includes a trend line as well?

227. .... takes into account the distance of every point in the scatter plot from the trend line.

228. The middle point of a data set arranged in an array from the smallest to the largest value is called:

229. In which field is ANOVA used to make comparisons amongst groups?

230. The reasons for choosing a sample out of a population are:

231. The following are the steps in the process of Cluster sampling. Put them in the right order:

232. The events that are not affected by other outcomes are called:

233. The following are data collection methods except:

234. Describe the relationship between the two variables in the above given scatter plot.

235. Which information correlation analysis of variables give about the relationship between the variables?

236. In the above image it is stated that:

237. The formula given above is that of:

238. Which statements are correct with regard to the images within a webpage?

239. In one study, over half of women ages 18-25 would rather be _____ than be fat.