Here are the math test scores of 10 randomly selected students from Class 1 and Class 2.

Question

Class 1: 75 80 84 79 92 86 88 86 86 90
Class 2: 83 85 91 93 72 85 76 80 82 89
Find the mean score of each sample. Based on the mean, which class generally performed better on
the math test?

Answer 1

To find the mean score of each sample, we need to add up all the scores and then divide by the total number of scores in each class.

For Class 1:
Mean = (75 + 80 + 84 + 79 + 92 + 86 + 88 + 86 + 86 + 90) / 10
Mean = 866 / 10
Mean = 86.6

For Class 2:
Mean = (83 + 85 + 91 + 93 + 72 + 85 + 76 + 80 + 82 + 89) / 10
Mean = 846 / 10
Mean = 84.6

Therefore, Class 1 generally performed better on the math test as they had a higher mean score compared to Class 2.

Answer 2

izza Shop 1 Pizza Shop 2
18 20
23 17
15 16
22 38
21 21
24 20
28 18
20 25
Find the median delivery time for each pizza shop. Based on the median, which pizza shop has the
fastest delivery time?

Answer 3

To find the median delivery time for each pizza shop, we first need to arrange the delivery times in ascending order.

For Pizza Shop 1:
15, 18, 20, 21, 22, 23, 24, 28
Since there are 8 observations, the median would be the average of the 4th and 5th observation.
Median = (21 + 22) / 2
Median = 21.5

For Pizza Shop 2:
16, 17, 18, 20, 20, 25, 38
Since there are 7 observations, the median would be the 4th observation.
Median = 20

Therefore, based on the median delivery time, Pizza Shop 1 has the fastest delivery time with a median delivery time of 21.5. Pizza Shop 2 has a median delivery time of 20.