## CEFS 521 Quiz 2 Liberty University

1. A research team designed a demographic questionnaire to collect information about participants. Which of the following variables identified on the questionnaire provides an example of an ordinal scale variable?
2. When comparing the four scales of measurement, what distinguishes the interval scale from the ratio scale?
3. The teacher calculates the highest score as being 97 and the lowest score as being 75. What is the range?
4. A researcher wants to know if IQ predicts success in college. Which analysis is most appropriate?
5. There are 12 participants who agree to take the test for a study focused on wellness. The total of all the participants’ scores is 96. What is the mean?
6. In studying the correlation between the number of hours studied and scores on the comprehensive exam, the researcher found a correlation of .30. According to Cohen’s guidelines, what would this mean regarding the strength of the relationship?
7. A student conducting a research study was told by her professor to use a scatterplot in conjunction with calculating the correlation coefficient. She discovered that the data points clustered along a straight line. This means:
8. A researcher determines that there is a positive correlation between sleep and test scores. This means as the amount of sleep is increased then test scores:
9. When looking at a list of students’ test scores, the teacher notices that one test score is extremely lower than the majority of the scores. This is known as a(an):
10. The teacher has a small class with only 7 students. The teacher grades their homework and reports scores of: 10, 7, 8, 12, 9, 11, and 13. What is the median?
11. The group scores to which each individual is compared are referred to as
12. A raw score can be transformed into any type of standard score by first
13. Grade equivalents are useful because they
14. Which type of normalized standard score is widely used in education and categorizes test performance in nine broad units?
15. Raw scores
16. Aptitude, intelligence, and achievement tests are all examples of
17. A T score has a fixed mean of __________ and a fixed standard deviation of ___________.
18. In order to convert a raw score to a Z score, the following values are needed:
19. A test should not be used for purposes not specifically recommended by the test developer unless
20. In a test which results in a report that describes how well the test taker does in comparison with other individuals, it is important to consider whether the
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