Answer:
See Explanation
Step-by-step explanation:
The question is incomplete, as the required data to answer the question are missing.
However, the interpretation of the question is to determine the interquartile range (IQR) of a certain dataset.
Then get the difference between the calculated IQR & Joe's data and also the difference between the calculated IQR & Sam's data
Then, make comparison
To do this, I will use the following assumed datasets.
[tex]Data: 62, 63, 64, 64, 70, 72, 76, 77, 81, 81[/tex]
IQR is calculated as:
[tex]IQR = Q_3 - Q_1[/tex]
[tex]Q_3[/tex] is [tex]the\ median[/tex] of the upper half
[tex]Q_1[/tex] is [tex]the\ median[/tex] of the lower half
For Joe, we have:
[tex]Lower\ half: 62, 63, 64, 64, 70[/tex]
[tex]Upper\ half: 72, 76, 77, 81, 81[/tex]
The median is then calculated as:
[tex]M = \frac{N + 1}{2}[/tex]
For, the lower half:
[tex]Q_1 = \frac{5 + 1}{2} = \frac{6}{2} = 3rd[/tex]
So:
[tex]Q_1 = 64[/tex]
For the upper half:
[tex]Q_3 = \frac{5 + 1}{2} = \frac{6}{2} = 3rd[/tex]
So:
[tex]Q_3 = 77[/tex]
When the same process is applied to Sam's data,
[tex]Q_1 = 52[/tex]
[tex]Q_3 = 58[/tex]
[tex]IQR = Q_3 - Q_1[/tex]
[tex]IQR = 77 - 64[/tex]
[tex]IQR = 13[/tex]
Assume that:
[tex]Joe = 60[/tex]
[tex]Sam = 65[/tex]
[tex]Joe - IQR = 60 - 13 = 47[/tex]
[tex]Sam- IQR = 65- 13 = 52[/tex]
Hence, the IQR is 47 points less for Joe's data than Sam's