If there is significant variation among subjects regarding their attitudes towards a given brand, this variance will be reflected most clearly in which of the following measures of brand attitude?
A)Mean
B)Median
C)Mode
D)Standard deviation
E)Frequency distribution

Question

Quizplus · Accepted Answer

Standard deviation is the measure of variability of the data points from the mean. If there is significant variation among subjects regarding their attitudes towards a given brand, then the standard deviation will be high, indicating a wider spread of attitudes. Therefore, D is the best choice. The mean (A) may not capture the true picture of the data set in the presence of outliers or extreme values. The median (B) may not accurately represent the attitudes towards the brand, especially when the distribution is skewed. The mode (C) is not useful when there are multiple modes or no mode. The frequency distribution (E) is a way to represent the data, but it does not give a measure of variability.

If There Is Significant Variation Among Subjects Regarding Their Attitudes