This data set represents the number of cups of coffee sold in a café between 8 a.m. and 10 a.m. every day for 14 days.

{10, 9, 6, 12, 4, 6, 7, 8, 15, 14, 12, 9, 10, 5}.

The difference of the values of the first and third quartiles of the data set is ___________

Question

This data set represents the number of cups of coffee sold in a café between 8 a.m. and 10 a.m. every day for 14 days.

{10, 9, 6, 12, 4, 6, 7, 8, 15, 14, 12, 9, 10, 5}.

The difference of the values of the first and third quartiles of the data set is ___________

amistre64 · Answer

how many numbers are in the data set?

amistre64 · Answer

14 days gives us 14 numbers to play with

a quartile is 1/4 of the data set (by count).  so 1q = 14/4

sort the numbers from small to large and find the 1q and 3q values