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# RES 341 Multiple-Choice Questions

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1. Who was the inventor of the correlation?
a. Sigmund Freud
b. Charles Darwin
c. Francis Galton
d. Jacob Cohen

2. Who was the founder of psychoanalysis?
a. Sigmund Freud
b. Charles Darwin
c. Francis Galton
d. Jacob Cohen

3. Which of the following is the easier way to describe data?
a. Average
b. Correlation
c. Descriptive
d. Frequency

4. Which of the following measures of central tendency is known as the midpoint for a set of scores?
a. Average
b. Mean
c. Mode
d. Median

5. What is the most common type of average reported?
a. Sum
b. Mean
c. Mode
d. Median

6. Which of the following is the correct formula for calculating the mean?
a. &#61523;X + n
b. &#61523;X / X
c. &#61523;X / n
d. &#61523;X + X

7. When using the AVERAGE function in Excel, which of the following are you calculating?
a. Sum
b. Mean
c. Mode
d. Median

8. Which of the following is the correct function for calculating the midpoint of a set of scores?
a. MEAN(A1:A15)
b. MEDIAN(A1+A2+A3)/3
c. MODE(A1:A12)
d. MEDIAN(A1:A10)

9. If you wanted to identify the point in a distribution at which 50% of scores fall above and 50% fall below a given score, which measure of central tendency would you report?
a. Average
b. Mean
c. Mode
d. Median

10. If you wanted to identify the most frequently occurring score in a distribution, which measure of central tendency would you report?
a. Average
b. Mean
c. Mode
d. Median

11. Which of the following is the correct function for calculating the score occurring most often in a distribution?
a. MEAN(A1:A15)
b. MEDIAN(A1+A2+A3)/3
c. MODE (A1:A12)
d. MEDIAN(A1:A10)

12. Which of the following is also defined as the point at which the sum of the deviations is equal to zero?
a. Arithmetic mean
b. Harmonic mean
c. Geometric mean
d. Weighted mean

13. Which of the following requires you to multiply a set of scores by the frequency of their occurrence, adding the total of these products and then dividing by the total number of scores?
a. Arithmetic mean
b. Harmonic mean
c. Geometric mean
d. Weighted mean

14. What is also referred to as the "midpoint" in a set of scores?
a. Average
b. Mean
c. Mode
d. Median

15. What is the term associated with scores that are at the extreme ends of the distribution?
a. Variability
b. Outliers
c. Skew
d. Percentile

16. If a distribution is "significantly distorted," what is this called?
a. Variability
b. Outliers
c. Skew
d. Percentile

17. In the formula for computing the mean, what does the letter "X" represent?
a. Summation
b. Sample size
c. Mean value of the group
d. Individual scores

18. In the formula for computing the mean, what does the Greek letter "&#61523;" represent?
a. Summation
b. Sample size
c. Mean value of the group
d. Individual scores

19. In the formula for computing the mean, what does the letter "n" represent?
a. Summation
b. Sample size
c. Mean value of the group
d. Individual scores

20. What is the median of the following set of scores? 10, 15, 12, 18, 19, 16, 12
a. 12
b. 15
c. 16
d. 17

21. What is the mode of the following set of scores? 10, 15, 12, 18, 19, 16, 12
a. 12
b. 15
c. 16
d. 17

22. What is the mean of the following set of scores? 10, 15, 12, 18, 19, 16, 12
a. 12
b. 15
c. 16
d. 17

23. If you wanted to describe a set of percentages equal to and below a certain point in a distribution, which of the following would you want to use?
a. Average
b. Percentile
c. Percent
d. Mode

24. Which of the following is another way of representing the 25th percentile?
a. Q1
b. Q2
c. Q3
d. Q4

25. Which of the following is another way of representing the 75th percentile?
a. Q1
b. Q2
c. Q3
d. Q4