HIGHLIGHT or BOLD THE MULTIPLE CHOICE ANSWERS BELOW since we are using computers for this.

ONLY THE LAST TWO QUESTIONS ARE NOT MULTIPLE CHOICE (24 and 25)

1. __________are demonstrated by simplifying and summarizing data; and ________ are demonstrated by explaining general conclusions about populations from sample data.

Group of answer choices

Descriptive statistics; inferential statistics

Inferential statistics; descriptive statistics

2. Conducting scientific experiments with the experimental method is usually explained with the assumption to manipulate the independent variable and control extraneous variables.

Group of answer choices

True

False

3. To critically evaluate claims related to psychology and behavioral science research, the experimental method can demonstrate ________, whereas the correlational method demonstrates ________.

Group of answer choices

cause & effect, observation and measurement of variables

observation and measurement of variables, cause & effect

4. Describing a student's occupation is demonstrated with a nominal scale of measurement, whereas describing a person's height is demonstrated with a ratio scale of measurement.

Group of answer choices

True

False

5. In an experiment, the experimental condition or group would receive the therapeutic experimental drug instead of the control group.

Group of answer choices

True

False

6. Although research questions typically concern a population, a research study typically examines a sample which represents the population.

Group of answer choices

True

False

7. Using the following X values: 2, 1, 5, 4, 4, and 2. Interpret your graph or table for: X+1 =_________.

Group of answer choices

24

19

28

8. Using the following X values: 1, 2, 1, 3, and 3. Interpret your graph or table for ² = ________.

Group of answer choices

19

28

24

9. Referring to Table 2.1 below, two individuals had an X-score of 2.

Table 2-1

X f

3 4

2 1

1 2

Group of answer choices

True

False

10. Referring to Table 2-2 below: This is a grouped frequency distribution table where the scores have been grouped into class intervals using an interval width of 4 points.

Table 2-2

X f

55-59

50-54

45-49

Group of answer choices

True

False

11. Refer to Table 2-2, which shows a grouped frequency distribution of scores. The lowest score in the original distribution is ________.

Table 2-2

X f

55-59

50-54

45-49

Group of answer choices

Cannot be determined

45

47.5

12. A bar graph is used for ratio data, and a histogram if used for nominal data.

Group of answer choices

True

False

13. For the following set of scores: 7, 8, 7, 12, and 16, we calculate the mean to be M = 10, and we explain the mean as the average of the scores.

Group of answer choices

True

False

14. The mode is explained as the distribution midpoint when listing scores from lowest to highest.

Group of answer choices

True

False

15. Measures of central tendency are commonly used in the behavioral sciences to summarize and describe the results of a research study.

Group of answer choices

True

False

16. A population of N = l0 scores has a mean of = 80. If 5 points are added to every score in the distribution, the value of the new mean is 85.

Group of answer choices

True

False

17. A sample of n = 5 scores has a mean of M = 8. If one new score with a value of X = 2 is added to the sample, what will be the value of the new mean?

Group of answer choices

M = 7

M = 8

M = 8.4

18. For a distribution of scores, if the mean is equal to the median, this distribution is most likely be symmetrical.

Group of answer choices

True

False

19. To compute the sample variance, the value of SS is divided by N.

Group of answer choices

True

False

20. To compute the population variance, the value of SS is divided by n-1.

Group of answer choices

True

False

21. The value of SS for the following set of scores is 3.

Scores: 1, 1, 1, 3

Group of answer choices

True

False

22. For a sample of n = 6 subjects with SS (the sum of the squares)= 60, we calculate s² (the sample variance) by dividing SS by n-1; therefore s² = ________, and is explained as the mean squared deviation.

Group of answer choices

12

10

23. The standard deviation is calculated for samples and populations, and explained as the standard distance of the scores from the mean.

Group of answer choices

True

False

24. A population of N = 4 scores has SS: 36. What is the standard deviation for the population?

25. Briefly explain the independent variable and the dependent variable used in the experimental method in a scientific experiment.

Explain using accurate wording that is clear and specific, using the format below if it is helpful:

Examples:

Using the experimental method, the ________ variable is the variable that the researcher manipulates that has more than one treatment condition. The ________ variable is the variable that the researcher observes and measures .

Or:

In an experiment, the researcher ________ the independent variable and ________ the dependent variable.