
Concept explainers
a.
Find the median.
a.

Answer to Problem 1WE
Explanation of Solution
Given information:
Given: The stem −and- leaf plot.
Calculation:
Here, we have the data distribution of the given steam and leaf plot:
Now, from the above distribution we can observe that the middle number is
Hence, the median is
b.
Find the first quartile.
b.

Answer to Problem 1WE
Explanation of Solution
Given information:
Given: The stem and leaf plot.
Calculation:
Here, the first quartile of the distribution means the median of the lower half of the given data.
Now, we have the lower half of the data:
Hence, the first quartile for the given data is
c.
Find the third quartile.
c.

Answer to Problem 1WE
Explanation of Solution
Given information:
Given: The stem and leaf plot.
Calculation:
Here, the third quartile of the distribution means the median of the upper half of the given data.
Now, we have the upper half of the data:
Hence, the first quartile for the given data is
d.
Find the range.
d.

Answer to Problem 1WE
Explanation of Solution
Given information:
Given: The stem and leaf plot.
Calculation:
Here, the range means the difference between the largest and smallest number given in the data.
Now we have
Hence, the range is
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