Given the table:
Mean Median Range IQR
51 51 6 4
Number of people served by each tour = 48
Number of tour = 56 tours
Largest = 54
Let's solve for the following:
• (a). Select the best description of center for the data set.
The average of the data set is the mean.
Therefore, based on the mean and median, we see that the average number of people served was about 51.
• (b). Select the best description for the spread of the data.
The range of a data set can be said to be the difference between the maximum and the minimum data values.
Range = Max - Min = 6
Therefore, the difference between the largest and the smallest number of people served is 6.
• (c). Select the graph with the shape that best fits the summary values.
From the table, we have:
Mean = 51
Median = 51
Since the median is equal to the mean, the graph of the data set will be symmetric between the range.
Therefore, the correct graph that best fits the summary values is Graph 2.
ANSWER:
• (a). Based on the mean and median, we see that the average number of people served was about 51.
• (b). The difference between the largest and the smallest number of people served is 6.
• (c). Graph 2.