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WorksheetsActivity 3: Measures of Central Tendency
Total questions: 15
Worksheet time: 23mins
Name
Class
Date
1.
What is the mode of the scores?
a)
15
b)
14
c)
24
d)
35
2.
In order to find the median, the data must be sorted from least to greatest first.
a)
True
b)
False
3.
What is the mode in the following numbers? [3, 24, 3, 7, 30, 1, 3, 7, 3]
a)
3 and 7 both are modes
b)
1 and 7 both are modes
c)
3 only
d)
7 only
4.
Find the mean. 18, 2, 0, 0, 0
a)
4
b)
5
c)
10
d)
20
5.
A data set can have more than one mode
a)
True
b)
False
6.
What do you do if there are two numbers in "the middle" when you are finding the median?
a)
Pick your favorite number
b)
Add the two numbers in the middle & then divide by two.
c)
They are both the median
d)
None of the above
7.
To find the average of a set of numbers, add up all the items and divide by...
a)
2.
b)
The smallest number
c)
The largest number
d)
The number of items in the set.
8.
The mode score on the 7th grade math test was 94.
Which of these interpretations must be correct?
Which of these interpretations must be correct?
a)
99 was the highest score on the test.
b)
More students received a 94 than any other score
c)
No student scored below a 50
d)
A score of 91 was slightly below average.
9.
What is the median?
a)
The number in the middle when the numbers are in order from least to greatest.
b)
The difference between the largest and smallest number.
c)
The average
d)
The number that appears most often.
10.
If you score 76, 85, 97, and 83 on your math tests, what would your median score be?
a)
84
b)
90
c)
85
d)
88
11.
Find the median: 12, 15, 13, 18, 23, 5?
a)
14
b)
16
c)
16.5
d)
18
12.
What measure of central tendency (mean, median or mode) would be best for the following set of data?
0, 89, 92, 97, 99, 100
0, 89, 92, 97, 99, 100
a)
Mode, because it is the one that shows up the most.
b)
Median, because there is an outlier. The outlier could be incorrect and would influence the mean too much.
c)
Mean, because there is not an outlier. You should always use the mean.
d)
There is not a best measure of central tendency for this data.
13.
When you are trying to find the MEDIAN of a set of data and 2 numbers are left in the middle after putting them in order from least to greatest, what do you do?
a)
List both of the numbers as the Median.
b)
Add the two numbers together and divide by 2.
c)
Pick the one that you want.
d)
Subtract the two numbers.
14.
What is the MEDIAN of this set of data?
10, 90, 80, 60, 50, 40, 70, 30, 20, 100
a)
50
b)
60
c)
55
d)
45
15.
Paulo got these markers in three tests: 72, 80 and 82. He had one more test to sit. He wanted an average of 80 for the four tests. What mark must he get in the fourth test?
a)
78
b)
80
c)
84
d)
86
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