In a survey,10people gave the following ratings for a local politician (on a scale...

In a survey,

people gave the following ratings for a local politician (on a scale of

100

Complete the parts below to identify any outliers.

(a)

Let

Q

1

be the lower quartile and

Q

3

be the upper quartile of the data set. Find

Q

1

and

Q

3

for the data set.

=

Q

1

=

Q

3

(b)

Find the interquartile range (IQR) of the data set.

IQR

(c)

Calculate a lower boundary using

−

Q

1

·

1.5

IQR. Calculate an upper boundary using

+

Q

3

·

1.5

IQR.(Note that

·

1.5

IQR means

1.5

times the IQR.)

Lower boundary:

Upper boundary:

Feb 02, 2023

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