Question

1. The number of customers in a restaurant during the peak hour of each day for a month varied

Answer 1

Step-by-step explanation:

First we must calculate the interquartile range (IQR), using this equation:

$IQR = Q_{3} - Q_{1}$

Based on the information provided we fill in:

$IQR = 58 - 45$

$IQR = 13$

In order to find what the range for the data set is we need to use the Interquartile Rule:

$Q_{1}-1.5$ × $IQR$

$Q_{3}+1.5$ × $IQR$

$1.5$ × $13 = 19.5$

Now we plugin in:

$45 - 19.5 = 25.5$

$58 + 19.5 = 77.5$

Any number below 25.5 is a possible outlier and any number above 77.5 is a possible outlier.  

Answer:

Based on the results of the calculations, 25 could be a possible outlier in the data set.