Question

Math 227-Statistics Spring 2019 Homework: Section 2.5 Homework Score: 0 of 1 pt 2.5.61 25 of 25 (19 complete) ▼ (a) Identify any outliers (using the 1.5 x IQR rule), and (b) draw a modified boxplot that represents the data set. Plot any outliers as individual points. 8353804548 98 59 54 50 35 32 75 36 11 58 64 43 60 (a) Identiy any possible outliers. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. (Type an integer or decimal. Use a comma to separate answers as needed.) O B. There are no outliers Clear All 1 9 Anth111 Anth111 pdf

Answer 1

sort the data in increasing order:

11 32 35 36 43 45 46 50 53 54 58 59 60 64 75 80 83 98

There are total 18 data points.

1st quartile= middle of first 9 observations = 5th observation = 43

3rd quartile = middle of last 9 observations= 14th observation= 64

IQR= 3rd quartile- 1st quartile= 64-43 = 21

An observation is called an outlier if it lies outside (43-1.5*IQR , 64+1.5*21) = (11.5,95.5)

So , 11 and 98 are outliers

a) option A: 11,98

Boxplot without outlier removed

贰3 贰3 CN

Boxplot with outlier removed

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