When constructing a boxplot three calculation steps are requ

When constructing a boxplot, three calculation steps are required:

1. Calculate the interquartile range.

2. Obtain the values of the inner and outer fences.

3. Find the median and the first and third quartiles.

The correct squence of the three steps is....

a. 1,2,3

b. 3,1,2

c. 2,1,3

d. 3,2,1

Solution

It is

OPTION B: 3, 1, 2 [ANSWER, B]

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Why?

To get the interquartile range, we need the first and third quartiles first. So do #3, then #1.

We then need the interquartile range to get the fences, so #1 goes first before #2. Hence, option B.