Which of the following measures offset proportions of a normal curve that are above and below the mean?
A) standard deviation
B) median
C) mode
D) coefficient of correlation

Question

Quizplus · Accepted Answer

Standard deviation is a measure of the spread of a distribution around the mean. It takes into account how far each data point is from the mean, and therefore offsets proportions of the curve both above and below the mean. The median (B) and mode (C) only describe central tendency and are not useful for offsetting proportions of a normal curve. The coefficient of correlation (D) measures the strength of a linear relationship between two variables and is not relevant for offsetting proportions of a normal curve.

Which of the Following Measures Offset Proportions of a Normal