Statistics & Probability MCQ Questions Answers

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

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

3. The formula given above is that of:

4. In the above image it is stated that:

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

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

7. The following are data collection methods except:

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

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

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

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

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

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

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

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

16. 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:

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

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

19. Which is not a research ethic?

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

21. Calculate the mode of these test scores.

22. Find out the median of the following data set

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

24. The idea behind reviewing existing knowledge is:

25. Ordinal numbers or data are primarily concerned with:

26. 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?

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

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

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

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

31. How is a Type II error symbolized as?

32. Commonly employed qualitative research methods include:

33. Which one is not an example of hypothesis?

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

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

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

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

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

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

40. Examples of Measures of central tendency include:

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

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

43. Probability proves useful:

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

45. .... 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.

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

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

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

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

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

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

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

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

54. Stem and leaf display is an example of:

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

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

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

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

59. Statistics is a branch of .... .

60. 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?

61. Probability can be determined by:

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

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

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

65. A sample of a population is:

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

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

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

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

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

71. 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?

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

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

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

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

76. Population parameters include the following except:

77. 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.

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

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

80. 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).

81. 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?

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

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

84. 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?

85. 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?

86. 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).

87. 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?

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

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

90. 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.

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

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

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

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

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

96. 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?

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

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

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

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