Quiz: Statistical Concepts

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?

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:

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?

A researcher determines that there is a positive correlation between sleep and test scores; this means that as the amount of sleep is increased, then test scores will:

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?

In comparing Spearman’s Rho to a Phi Coefficient, one would generally prefer to use Spearman’s Rho when correlating:

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:

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?

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 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:

Grade equivalents are useful because they:

Percentile scores:

Z scores, T scores, and deviation IQs are examples of:

A school interested in measuring students’ progress in academic subjects throughout the school years might choose to use:

In _______________ test interpretation, content domain is an important consideration.

A T score has a fixed mean of __________ and a fixed standard deviation of __________.

Aptitude, intelligence, and achievement tests are all examples of: