In order to compute the mean and standard deviation, the level of data measurement should be:
A) ratio or interval.
B) qualitative.
C) nominal.
D) ordinal.

Question

Quizplus · Accepted Answer

To compute the mean and standard deviation, the data must be on a scale that allows for meaningful arithmetic operations, which is true for ratio and interval levels of measurement. These levels provide numerical data where differences and ratios are interpretable, unlike nominal or ordinal data, which do not support the mathematical operations required to calculate mean and standard deviation.

In Order to Compute the Mean and Standard Deviation, the Level