Question

{30, 24, 8, 21, 35, 23, 23, 19, 13, 17}
A.
lower quartile = 8, median = 22, upper quartile = 35
B.
lower quartile = 17, median = 22, upper quartile = 24
C.
lower quartile = 8, median = 21.3, upper quartile = 35
D.
lower quartile = 17, median = 21.3, upper quartile = 24

Answer 1

@Tkhunny

Answer 2

#1 Sort the data.

8 13 17 19 21 23 23 24 30 35

Count the data: 10 - Whoops. This is a problem. Odd numbers are easier. You will have to check your course materials for advice.

Some say the Average of #5 and #6: (21+23)/2 = 22
Some say it must be a member of the set and pick the BELOW definition: 23
This gives the Median.

After you decide the median, this splits the data into two pieces. Do the same things with each of the two pieces - find each median. These are the quartiles.

8 13 17 19 21 23 23 24 30 35

Median 22 (averaging method)

Lower set: 8 13 17 19 21 ==> Lower Quartile: 17
Higher set: 23 23 24 30 35 ==> Higher Quartile: 24

Answer 3

Thank you!