Descriptive Statistics in Educational Research MCQ
Descriptive Statistics in Educational Research MCQ
1. A raw score that has been transformed into _____ units is called z score .
Answer
Correct Answer:
Standard deviation
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2. The point where the regression line crosses the _____ is called y-intercept
Answer
Correct Answer:
Y-axis
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3. A measure of the average deviation from the mean in squared units is called
Answer
Correct Answer:
Variance
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4. Scores that have been converted from one scale to another to have a particular mean and standard deviation is called
Answer
Correct Answer:
Standard scores
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5. The square root of the variance is known as
Answer
Correct Answer:
Standard deviation
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6. Not symmetrical is called skew
Answer
Correct Answer:
True
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7. Regression based on one dependent variable and one independent variable is called simple regression
Answer
Correct Answer:
True
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8. A graph used to depict the relationship between two _____ is called scatter plot
Answer
Correct Answer:
Quantitative variables
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9. The line that best fits a pattern of observations is called
Answer
Correct Answer:
Regression line
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10. The equation that defines the regression line is called
Answer
Correct Answer:
Regression equation
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11. The predicted change in Y given a 1-unit change in X is called
Answer
Correct Answer:
Regression coefficient
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12. A set of statistical procedures that are used to explain or predict the values of a dependent variable on the basis of the values of one or more _____ is called regression analysis
Answer
Correct Answer:
Independent variables
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13. The norm group that is used to determine the percentile ranks is called reference group
Answer
Correct Answer:
True
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14. The percentage of people in a group who have a specific characteristic is called
Answer
Correct Answer:
Rate
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15. The difference between the highest and lowest numbers is called
Answer
Correct Answer:
Range
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16. Skewed to the _____ is called positively skewed
Answer
Correct Answer:
Right
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17. Scores that divide a distribution into _____ equal parts is percentile ranks
Answer
Correct Answer:
100
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18. The percentage of scores in a reference group that fall below a particular raw score is called percentile ranks
Answer
Correct Answer:
True
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19. A regression coefficient obtained in multiple regression is partial regression coefficients
Answer
Correct Answer:
True
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20. A number that is very atypical of the other numbers in a distribution is called
Answer
Correct Answer:
Outlier
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21. A unimodal, symmetrical, bell-shaped distribution that is the theoretical model of many variables is normal distribution
Answer
Correct Answer:
True
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22. Skewed to the left is negatively skewed
Answer
Correct Answer:
True
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23. Which exclusive refers to response categories that do not overlap?
Answer
Correct Answer:
Mutual
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24. In which regression based on one dependent variable and two or more independent variables?
Answer
Correct Answer:
Multiple
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25. The most frequently occurring number is called
Answer
Correct Answer:
Mode
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26. The 50th percentile is called
Answer
Correct Answer:
Median
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27. Provide information about where a score falls in relation to the other scores in the distribution of data is measure of relative standing
Answer
Correct Answer:
True
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28. A numerical index that provides information about how spread out the data values are or how much variation is present is measure of variability
Answer
Correct Answer:
True
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29. The single numerical value considered most typical of the values of a quantitative variable is measure of central tendency
Answer
Correct Answer:
True
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30. The arithmetic average is known as
Answer
Correct Answer:
Mean
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31. A graph that relies on the drawing of one or more lines is called
Answer
Correct Answer:
Line graph
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32. Statistics that go beyond the immediate data and infer the characteristics of populations based on samples is _____ statistics
Answer
Correct Answer:
Inferential statistics
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33. A set of numbers with little variability is _____
Answer
Correct Answer:
Homogenous
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34. A graphic that shows the frequencies and shape that characterize a quantitative variable is called
Answer
Correct Answer:
Histogram
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35. A set of numbers with a great deal of variability is called
Answer
Correct Answer:
Heterogeneous
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36. The data values are clustered or grouped into separate intervals, and the frequencies of each interval are given is grouped frequency distribution
Answer
Correct Answer:
True
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37. An arrangement in which the frequencies of each unique data value are shown is frequency distribution
Answer
Correct Answer:
True
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38. Exhaustive refers to the property that the set of intervals covers the complete range of data values is called
Answer
Correct Answer:
Exhaustive
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39. Statistics that focus on describing, summarizing, and explaining a particular set of data is called
Answer
Correct Answer:
Descriptive statistics
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40. A set of data is known as
Answer
Correct Answer:
Data set
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41. In which table displaying information in cells formed by the intersection of two or more categorical variables?
Answer
Correct Answer:
Contingency
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42. A graph that uses vertical bars to represent the data is called
Answer
Correct Answer:
Bar graph
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43. A percentile rank reflects the percentage of scores in a reference group that fell below a certain raw score.
Answer
Correct Answer:
True
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44. Raw scores that have been transformed into standard deviation units are called z scores.
Answer
Correct Answer:
True
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45. A scatterplot is used to show the frequencies and shape that characterize a single quantitative variable.
Answer
Correct Answer:
False
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46. The square root of the variance is the standard deviation.
Answer
Correct Answer:
True
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47. Approximately 99% of scores fall within 2 standard deviations of the mean in a normal distribution.
Answer
Correct Answer:
False
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48. Which of the following rules is correct when reading a contingency table?
Answer
Correct Answer:
If the percentages are calculated down the columns, compare across the rows.
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49. If a test was very easy for the vast majority of students, except for a few students who had very low scores, then the distribution of scores would be ______.
Answer
Correct Answer:
Negatively skewed
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50. In a fully normal distribution of scores, which of the following is true?
Answer
Correct Answer:
The mean, median, and mode are the same number.
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51. What procedure is used to explain or predict the values of a dependent variable based on the values of two or more independent variables?
Answer
Correct Answer:
Multiple regression analysis
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52. Which of the following is a measure of variability?
Answer
Correct Answer:
Variance
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53. Which of the following is a measure of central tendency?
Answer
Correct Answer:
Correlation coefficient
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54. How is a set of data organized?
Answer
Correct Answer:
Each participant gets a row, and each variable gets a column.
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55. Hypothesis testing and estimation are both types of ______ statistics.
Answer
Correct Answer:
Inferential
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56. We want to predict a person’s achievement test score using his or her years of education and aptitude test score. Here is the appropriate regression equation:Y = 25 + .5X1 +10X2,where Y = achievement test score, X1 = years of education, and X2 = aptitude test score.If the person has 10 years of education and an aptitude test score of 5, then what is his predicted achievement score? (Hint: just insert 10 for X1 and 5 for X2 in the equation.)
Answer
Correct Answer:
80
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57. What is the median of the following set of scores: 22, 6, 10, 11, 14?
Answer
Correct Answer:
11
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Educational Research And Methods MCQs | Topic-wise
