The company financial officer was interested in the average cost of PCs that had been purchased in the past six months. She took a random sample of the price of 10 computers, with the following results. $3,250, $1,127, $2,995, $3,250, $3,445, $3,449, $1,482, $6,120, $3,009, $4,000
What is the third quartile?
A) $1,446.50
B) $2,617.00
C) $3,415.75
D) $3,449.00
E) $4,212.00

Question

Quizplus · Accepted Answer

Place scores in ascending order and calculate the index = (p/100)n = (75/100) × 10 = 7.5. When the index is not an integer, round up to the next integer to obtain the index value: 7.5 rounds to 8; the eighth value is $3,449.

The Company Financial Officer Was Interested in the Average Cost