If the lowest score in a distribution is 47 and the highest score is 99 and you used six groups,what is the appropriate interval size?
A)5
B)2
C)10
D)10.4

Question

Quizplus · Accepted Answer

To determine the appropriate interval size, we need to calculate the range of the distribution by subtracting the lowest score from the highest score:

Range = 99 - 47 = 52

Next, we divide the range by the number of groups we want to create (six in this case) to determine the interval size:

Interval size = Range / Number of groups = 52 / 6 = 8.67

However, since we want a whole number for our interval size, we should round up to the nearest 10 to ensure that the intervals are easy to work with and interpret.

Therefore, the appropriate interval size is C)10.

If the Lowest Score in a Distribution Is 47 and the Highest