If We Are Tracking Quality of Performance for a Class

question 52

True/False

If we are tracking quality of performance for a class of students, we should plot the individual grades on an x-bar chart, and the pass/fail result on a p-chart.

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Definitions:

Standardized Value

A transformed value obtained from the original data that indicates how many standard deviations a data point is from the mean.

Kruskal-Wallis Test

A nonparametric statistical test that assesses whether there are significant differences between two or more groups of an independent variable on a continuous or ordinal dependent variable.

Null Hypothesis

A default position that there is no difference or effect, used in statistics as a starting point for testing.

Distribution

Describes the way values of a variable or set of variables are spread or dispersed across possible values or ranges.