When scores represent ratio level of the measurement, the is the preferred measure of central tendency and the the preferred measure of variability.
A)mean; range
B)mean; standard deviation
C)median; mean
D)median; standard deviation

Question

Quizplus · Accepted Answer

When scores represent ratio level of measurement, the mean is the preferred measure of central tendency as it takes into account all the scores and their magnitudes. The standard deviation is the preferred measure of variability as it provides a measure of the average distance of scores from the mean and takes into account all scores in the calculation. The range (option A) is not as useful for ratio data as it only takes into account the difference between the highest and lowest scores and does not provide information about the distribution of scores in between. The median (options C & D) is not as useful as the mean for ratio data as it only takes into account the middle score and does not consider the magnitude of all scores.

When Scores Represent Ratio Level of the Measurement, the Is