To find first quartile.
Answer to Problem 1E
Median of the lower half of the data set
Explanation of Solution
Given Information: first quartile of dataset.
Calculation:
The first quartile, denoted by
For example,
To find the first quartile of the data set
First, we write data in increasing order:
The median is 12.
So,
Therefore, the lower half of the data is:
Now,
The first quartile,
So,
Since there is an even number of values, we need the mean of the middle two values to find the first quartile:
.
Chapter 11 Solutions
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