A student who sometimes scores high and sometimes scores low on a series of weekly tests will have a higher ____ than a student who makes the same score week after week.
A) Mean
B) Median
C) Mode
D) standard deviation
E) Polygon

Question

Quizplus · Accepted Answer

The standard deviation measures the variability or spread of the data points from the mean, and a student who has scores that vary greatly from week to week will have a higher standard deviation than a student with consistent scores. The mean, median, mode, and polygon are not affected by variability in the same way that standard deviation is.

A Student Who Sometimes Scores High and Sometimes Scores Low