In a hearing test,subjects estimate the loudness (in decibels)of sound,and the results are;68,67,70,71,68,75,68,62,80,73,68 What are the outer fences?
A)60.5,80.5
B)75.5,80.5
C)53,88
D)83,88
E)7.5,15

Question

Quizplus · Accepted Answer

To find the fences, we first need to find the lower quartile (Q1) and upper quartile (Q3):
Q1 = 68
Q3 = 75

Next, we can calculate the interquartile range (IQR):
IQR = Q3 - Q1
IQR = 75 - 68
IQR = 7

Using the formula for finding the fences:
Lower fence = Q1 - 1.5(IQR)
Upper fence = Q3 + 1.5(IQR)

Lower fence = 68 - 1.5(7)
Lower fence = 57.5

Upper fence = 75 + 1.5(7)
Upper fence = 88

Therefore, the outer fences are 57.5 and 88. The best choice is C.

In a Hearing Test,subjects Estimate the Loudness (In Decibels)of Sound,and