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- 1. Multiple Choice
The number of students (class size) in each of 7 classes is shown below.
15, 25, 25, 29, 31, 32, 37
Which class size affects the range of all 7 classes the most?
15
25
29
32
- 2. Multiple Choice
Abe found the mean and median of this list of numbers.
1, 3, 3
If the number 6 were added to the list, then
the mean would increase
the mean would decrease
the median would increase
the median would decrease
- 3. Multiple Choice
A snack bar sells 5 items with a mean (average) price of $0.60, as shown below.
Chips - $0.50
Juice - $0.80
Apple - $0.60
Candy - $0.70
Gum - $0.40
Which pair of items could be added to the menu without changing the average price?
Banana ($0.60) and Soda ($0.75)
Banana ($0.60) and Cookie ($0.50)
Energy Bar ($0.45) and Cookie ($0.50)
Energy Bar ($0.45) and Soda ($0.75)
- 4. Multiple Choice
Edgar earned the following scores on his first 10 science tests.
73, 86, 91, 87, 88, 79, 82, 93, 90, 86
Which of these will be affected if Edgar earns a score of 50 on his next test?
mean, median, and mode
mean only
mean and median
median only
- 5. Multiple Choice
Sandy keeps track of the number of visitors to her website for 6 days.
75 76 82 105 90 100
The number of visitors to her website on day 7 is 88. Which measure would change if Sandy adds 88 to the list?
mean
range
median
- 6. Multiple Choice
A data set has 7 values.
4, 6, 10, 10, 12, 18, 24
The value 4 is removed from the data set. How is the mean affected?
the mean increases
the mean decreases
the mean stays the same
- 7. Multiple Choice
Harrison had an 89 average on his first 4 reading tests. On his next 2 reading tests, he scored a 93 and a 78. How did these 2 additional tests affect his overall average?
Raised his average 2.3 points
Lowered his average 2.3 points
Raised his average 1.2 points
Lowered his average 1.2 points
- 8. Multiple Choice
There are 5 children in Isabella’s family including Isabella. Their ages are listed below.
1, 4, 4, 11, 15
Which of the following measures will not change when the children are all 5 years older?
mean
median
mode
range
- 9. Multiple Choice
The manager of ‘Crispy Quick Burgers’ recorded the number of hamburgers sold each hour from 10 a.m. to 12 noon and from 1 p.m. to 8 p.m. for one day, as shown below.
12, 11, 10, 23, 19, 14, 17, 31, 24
The manager found that the range of the data was 21.
If 35 hamburgers were sold between 12 noon and 1 p.m., how will the range of the data change?
It will increase by 1
It will increase by 4
It will increase by 7
It will increase by 35
- 10. Multiple Choice
Roxanne’s first six test scores were 75, 75, 95, 75, 90, and 60. On her seventh test she received a score of 95.
Which measure of data changed because of Roxanne’s seventh test score?
mean
median
mode
range
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