## COUC 521 Quiz 2

## COUC 521 Quiz 2 Liberty University

- The variance is determined to be 36. What would be the standard deviation?
- When looking at a list of students’ test scores, the teacher notices that one test score is significantly lower than the majority of the scores. This is known as a/an:
- 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?
- A group of researchers is attempting to design an instrument that will measure self-esteem. The researchers have an extensive list of traits that may contribute to this construct. Which analysis may assist the research team in narrowing the list of traits into a few dimensions?
- In comparing Spearman’s Rho to a Phi Coefficient, one would generally prefer to use Spearman’s Rho when correlating:
- In a follow-up study, a researcher reported that the correlation is .85. In the initial study, the correlation was .78. This means there is a/an:
- The teacher calculates the highest score as being 97 and the lowest score as being 75. What is the range?
- A researcher is looking for a specific study report, in which he/she knows the kurtosis value. He reads the following kurtosis values in various reports. Which one supports a mesokurtic distribution?
- When comparing the four scales of measurement, what distinguishes the interval scale from the ratio scale?
- 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?
- Which type of normalized standard score is widely used in education and categorizes test performance in nine broad units?
- Denise took an aptitude test that was first taken by a large group of male engineers, on whom the test was standardized. Denise is a nurse. What might be a concern when interpreting her test scores?
- A type of standard score with a mean of 100 and a standard deviation of 15 is:
- A raw score can be transformed into any type of standard score by first:
- The group scores to which each individual is compared are referred to as:
- Raw scores:
- A T score has a fixed mean of __________ and a fixed standard deviation of __________.
- A school interested in measuring students’ progress in academic subjects throughout the school years might choose to use:
- 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:
- Z scores, T scores, and deviation IQs are examples of: