Correlation analysis requires that the scales of measurement be expressed in either:
A) nominal or ordinal.
B) ordinal or ratio.
C) interval or ratio.
D) nominal or ratio.
E) nominal or interval.

Question

Quizplus · Accepted Answer

Correlation analysis requires data to be measured on an interval or ratio scale. Nominal and ordinal scales only provide information on categories or rankings and do not have a meaningful numerical distance between values. Interval scales have a meaningful distance between values but do not have a true zero point, while ratio scales have a true zero point and a meaningful distance between values. Therefore, correlation analysis can only be performed on variables measured on interval or ratio scales.

Correlation Analysis Requires That the Scales of Measurement Be Expressed