## COUC 521 Quiz 2

## COUC 521 Quiz 2 Liberty University

**COUC 521 Quiz 2 Statistical Concepts **Sign In

Covers the **Textbook **material from **Module 2: Week 2**.

- 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?
- 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?
- When comparing the four scales of measurement, what distinguishes the interval scale from the ratio scale?
- 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:
- 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 that:
- 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
- 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:
- The teacher calculates the highest score as being 97 and the lowest score as being 75. What is the range?
- The variance is determined to be 36. What would be the standard deviation?
- The teacher grades the papers and determines the following set of scores: 90, 85, 87, 85, 92, 90, 83, 85, and 98. What is the mode?
- A type of standard score with a mean of 100 and a standard deviation of 15 is:
- 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:
- 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?
- Percentile scores:
- In _______________ test interpretation, content domain is an important consideration.
- Grade equivalents are useful because they:
- The group scores to which each individual is compared are referred to as:
- Raw scores:
- Aptitude, intelligence, and achievement tests are all examples of:
- One reason for choosing either norm-referenced or criterion-referenced interpretation involves:

Set 2

- 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: