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PBD Measures of Central Tendencies

Total questions: 25

Worksheet time: 50mins

Name
Class
Date
1.
Ellana scores these number on her spelling test: 4, 6, 7.  She would like her mean to be 6.  What will she have to score next?
a)
17
b)
24
c)
7
d)
2
2.
What measure of central tendency (mean, median or mode) would be best for the following set of data?
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.
3.

Find the median: 12, 15, 13, 18, 23, 5?

a)

14

b)

16

c)

16.5

d)

18

4.
Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?
a)
193
b)
127
c)
60
d)
66
5.
The scores awarded to 25 students for an assignment were as follows:
4  7  5  9  8  6  7  7  8  5  6  9  8    5  8  7  4  7  3  6  8  9  7  6  9
What is  the mode?
a)
6
b)
7
c)
8
d)
9
6.
Find the mean of these numbers:
5,11,2,12,4,2
a)
4.1
b)
6
c)
4.5
d)
4
7.
I found the mean of my data and it is 25. What two mathematical processes did I use? 
32, 15, 15, 52, 11
a)
Addition and Subtraction
b)
Addition and Division
c)
Addition and Multiplication
d)
Multiplication and Subtraction
8.
If the mean of a data set is 10, what is the missing piece of data? 
5, 4, 7, 15, 12, ___
a)
7
b)
17
c)
20
d)
16
9.
A data set can have more than one median?
a)
True
b)
False
c)
What's a Median?
10.

The three types of measures of central tendencies are

a)

Mode

b)

Mean

c)

Median

d)

Midpoint

11.

____________________ is a value that is too small or too large in a set of data.

a)

Extreme value

b)

Midpoint

c)

Frequency

d)

Class mode

12.

State the mode for the size of shirts.

a)

SS

b)

M

c)

L

d)

XL

e)

XXL

13.

Which measures of central tendency is suitable to describe situation below?


Students’ favourite television programmes in your class.

a)

Mode

b)

Mean

c)

Median

14.
Which measure of central tendency describes the given formula?
a)
Mean
b)
Median
c)
Mode
d)
Frequency
15.
In order to find the median, the data must be sorted from least to greatest first.
a)
True
b)
False
16.

For this table of information, how many 1s occurred in the data?

a)

3

b)

5

c)

none

d)

impossible to know

17.

What is the mode?

a)

The middle number in an ordered set of data.

b)

The difference between the greatest and least amount in the data set

c)

The value that occurs the most often in a data set

d)

The sum of all the numbers in a data set divided by the size

18.

What is the first step when looking at a data set?

a)

Find the mean

b)

Sort the data into categories

c)

Find the range

d)

Put the data in ascending order

19.

If you score 76, 85, 97, and 83 on your math tests for the unit, what would your median score be?

a)

84

b)

90

c)

85

d)

88

20.

The average temperatures across Washington, Texas, Oklahoma, New York, Missouri, Georgia, Hawaii and Michigan are 48°F, 65°F, 60°F, 45°F, 54°F, 64°F, 70°F and 45°F respectively. Find the median.

a)

25° F

b)

57° F

c)

56°

d)

50° F

21.
a)

2

b)

5

c)

10

d)

8

22.
a)

20

b)

18

c)

9

d)

15

23.
The table shows the number of people with the corresponding number of friends on Facebook.  What is the median? 
a)
49.6
b)
50
c)
51
d)
50.3
24.

Find the mode.

a)

£19

b)

£20

c)

£60

d)

£10

25.

Find the median number of phones.

a)

2

b)

2.5

c)

3

d)

1.5

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