_____ is the most useful measure of dispersion and is calculated by subtracting scores from the mean, adding the squared differences, and dividing the sum by the total number of scores.

Question

Quizplus · Accepted Answer

The measure of dispersion that is calculated by subtracting scores from the mean, adding the squared differences, and dividing the sum by the total number of scores is the variance. While the range can give an idea of how spread out the data is, it only takes into account the difference between the maximum and minimum scores, making it less useful than variance. Standard deviation is also a useful measure of dispersion, but it is derived from the variance by taking the square root of the variance, making variance the more precise measure. Mode is not a measure of dispersion, but rather a measure of central tendency, identifying the most common score in a dataset.

_____ Is the Most Useful Measure of Dispersion and Is