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WorksheetsMeasures of Central Tendency
Total questions: 20
Worksheet time: 1hrs 13mins
The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below:
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?
5
6
9
11
At Donald's Doughnuts, the number of doughnut holes in a bag can vary. Help Donald find the mode of the number of doughnut holes per bag described in the sample below:
{12, 10, 10, 10, 13, 12, 11, 13, 10}
13
12
11
10
The number of miles that Jenna cycled each week is shown below:
32, 42, 28, 52, 48, 36, 31
What is the median number of miles Jenna cycled?
24
39
36
52
Find the range of the scores below.
5, 15, 10, 20, 15, 10, 15
5
10
15
20
What is an outlier?
A value that is much less or much greater than the other values in a data set.
The difference between the upper and lower quartiles of a data set.
The mean of the distances from each data value in a set to the mean of that set.
The difference between the greatest and least numbers in a data set.
Gary has taken an aptitude test 8 times and his scores are 96, 98, 98, 105, 36, 87, 95, and 93.
His mean score is given as
(a)
If you have two numbers in the middle, you should _____.
add them together and divide by two
find the number in between the two
find the mean of the two numbers
all of these
The scores shown below were received by four science teams named A, B, C, and D in an examination. Each team reported an "average" of 90.
Which of the following is true for the measure of central tendency that was used by the team?
A: 80, 85, 90, 95, 100
B: 93, 92, 90, 90, 91
C: 80, 86, 95, 92, 90
D: 85, 90, 90, 90, 90
Team D used mean
Team C used mode
Team A used mean
Team B used median
The bar chart shows how many cars were sold by a salesman over a period of time. Find the mean number of cars sold per day.
(a)
Mathew sold 78 apples on Monday, 58 apples on Tuesday, 80 apples on Wednesday, and 64 apples on Thursday. Find the average number of apples sold by Mathew.
60
50
70
140
Gary has taken an aptitude test 8 times and his scores are 96, 98, 98, 105, 36, 87, 95, and 93.
His modal score is given as
(a)
In a survey of 10 households, the number of children was found to be:
4, 1, 5, 4, 3, 7, 2, 3, 4, 1
State the mode.
(a)
A police station kept records of the number of road traffic accidents in their area each day for 100 days. The figures show the number of accidents per day.
Find the mean number of accidents per day.
(a)
A football team keep records of the number of goals it scores per match during a season. Find the mean number of goals per match.
(a)
Find the mode of the data set;
Identify the outlier, and
Find the mode excluding outliers:
100, 100, 100, 20, 120, 90.
110, 120, 100
100, 100, 100
20, 100, 20
100, 20, 100
Gary has taken an aptitude test 8 times and his scores are 96, 98, 98, 105, 36, 87, 95, and 93.
His median score is given as
(a)
The marks obtained by 25 pupils on a test are shown below.
3, 4, 5, 6, 5
5, 1, 2, 3, 3
4, 7, 5, 1, 5
2, 5, 6, 5, 4
6, 4, 5, 4, 3
Prepare a frequency distribution table and use it to determine its mode.
(a)
The marks obtained by 25 pupils on a test are shown below.
3, 4, 5, 6, 5
5, 1, 2, 3, 3
4, 7, 5, 1, 5
2, 5, 6, 5, 4
6, 4, 5, 4, 3
Calculate the median score.
(a)
The marks obtained by 25 pupils on a test are shown below.
3, 4, 5, 6, 5
5, 1, 2, 3, 3
4, 7, 5, 1, 5
2, 5, 6, 5, 4
6, 4, 5, 4, 3
Calculate the range of the scores.
(a)
The marks obtained by 25 pupils on a test are shown below.
3, 4, 5, 6, 5
5, 1, 2, 3, 3
4, 7, 5, 1, 5
2, 5, 6, 5, 4
6, 4, 5, 4, 3
A pupil is chosen at random from the group of pupils. What is the probability that the pupil's mark is greater than 5?
(a)
