A data set has 60 observations with a minimum value equal to 30 and a maximum value equal to 72. The number of classes using the 2k c n rule is

Question

Quizplus · Accepted Answer

The 2k c n rule states that the number of classes should be between 2k and 2k+1, where k is the number of significant digits in the range of the data. The range of the data is 72 - 30 = 42, which has 2 significant digits. Therefore, the number of classes should be between 2^2 = 4 and 2^2+1 = 5. The only choice that falls within this range is A) 6.

A Data Set Has 60 Observations with a Minimum Value