A set of scores ranges from a high of X = 96 to a low of X = 11.If these scores were placed in a grouped frequency distribution table,what is the best value for the interval width?
A)5 points
B)8 points
C)9 points
D)10 points

Question

Quizplus · Accepted Answer

The range of the scores is 96 - 11 = 85. To find the best interval width for a grouped frequency distribution, you typically want to divide the range by a reasonable number of intervals (often around 5 to 20 intervals, depending on the data set size and range). Among the given options, 10 points (D) is the best choice because it divides the range into a manageable number of intervals (85/10 = 8.5, which rounds to 9 intervals), making the data easy to analyze while preserving detail.

A Set of Scores Ranges from a High of X