Examlex
In correcting a short-answer test to measure students' knowledge of specific principles, a teacher deducted one point from the total score for each misspelled word.How would this procedure affect test results?
Range
The difference between the highest and lowest values in a data set, indicating the span of data points.
Standard Deviation
A measure of the dispersion or variability within a set of numerical data, indicating how spread out the values are from the mean.
Variance
A statistical measure of the dispersion representing how much the data points in a data set diverge from the mean value.
Mean
The arithmetic average of a set of numbers, calculated by adding them all together and dividing by the number of numbers.
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