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Form 2: Chapter 12 Measures of Central Tendencies

Total questions: 40

Worksheet time: 1hrs 2mins

Name
Class
Date
1.
How many students have more than 1,000 songs on their MP3 player?
a)
5
b)
16
c)
10
d)
4
2.
How many cities have temperatures between 70 degrees and 99 degrees?
a)
44
b)
34
c)
26
d)
62
3.
Austin hit some home runs in a game.  He hit 9, 11, 12, and 8.  He wants his mean to be 10.  How many will he need in the next game?
a)
40
b)
50
c)
10
d)
3
4.
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
5.
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.
6.

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

a)

14

b)

16

c)

16.5

d)

18

7.

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

8.
Austin hit some home runs in a game.  He hit 9, 11, 12, and 8.  He wants his mean to be 10.  How many will he need in the next game?
a)
40
b)
50
c)
10
d)
3
9.
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.
10.

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

11.
The number of miles that Jenna cycled each week for a 7-week period is shown: 
36, 42, 28, 52, 48, 36, 31 
What is the median number of miles Jenna cycled?
a)
24
b)
36
c)
39
d)
52
12.
Which team has the tallest player?
a)
Team A
b)
Team B
13.
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?
a)
5
b)
6
c)
9
d)
11
14.
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
15.
Measures of central tendency which has the most number of frequency in the set of scores. 
a)
Mean
b)
Median
c)
Mode
d)
Frequency
16.

The table shows time taken to build a model of a rocket in science activity for 11 groups of students. Find the median.

a)

10

b)

20

c)

30

d)

40

17.

Kanang bought 5 types of stationaries which cost RM1, RM2, RM3, RM3, RM6 respectively.

a) Calculate the mean, mode and median.

b) Calculate the new mean, median and mode if the price is multiplied by 3

(a)  

18.

The mode of a set of data is

a)

the class with the highest frequency

b)

the value or data in the middle after the data is arranged in ascending or descending order.

c)

the value obtained when the sum of the data values is divided by the number of data.

d)

the highest value of its frequency.

19.

The three types of measures of central tendencies are

a)

Mode

b)

Mean

c)

Median

d)

Midpoint

20.

Which of the following statement is not true about mode?

a)

Mode the least frequent data in a set of data.

b)

Sometimes there are two modes in a set of data where the highest frequency is equal.

c)

When the frequency of a set of data is the same then the set of data is to be said as no mode.

d)

Mode is a more appropriate measure of central tendency when the set of data involves non-numerical values like category data. Additionally, mode is also suitable for favourite or popular items.

21.

State the mode.

a)

RM 1

b)

RM 2

c)

RM 3

d)

RM 4

22.

State the mode.

a)

Blue

b)

Green

c)

Red

d)

Yellow

23.

Bar chart shows the size of mandarin oranges sold at a store during Chinese New Year.


Calculate the median.

a)

Size S

b)

Size M

c)

Size L

d)

Size XL

24.

The bar chart shows the number and the price of concert tickets sold by the school Theatre Club.


Determine the measures of central tendencies suitable for the given situation.

a)

Mean

b)

Mode

c)

Median

25.

The median of 3,7,4,10,5 and 12 is

a)

3

b)

4

c)

5

d)

6

26.

The mode of 2,3,2,4,5,3,2,and 9 is

a)

2

b)

3

c)

4

d)

5

27.

6,4,7,8,4,1

Find the difference between the mean and the mode of data given

a)

1

b)

2

c)

3

d)

4

28.
a)

2

b)

5

c)

10

d)

8

29.
a)

20

b)

18

c)

9

d)

15

30.

The mean of 4,8,x,12 and 6 is 7.Find the value of x

a)

4

b)

5

c)

6

d)

10

31.
a)

3

b)

33

c)

27

d)

16

32.

Determine the suitable measure of central tendency of the following set of data

4,4,4,6,8,8,11,12,15

a)

mode

b)

median

c)

mean

d)

average

33.

Determine the suitable measure of central tendency

a)

mode

b)

mean

c)

median

d)

average

34.

Diagram 1 shows the grads obtained by a group of students in a Mathematics test. Determine the mode.

a)

Grade A

b)

Grade B

c)

Grade C

d)

Grade D

35.

The table shows the heights of a group of students. Determine the modal class.

a)

(155 - 159) cm

b)

(160 - 164) cm

c)

(165 - 169) cm

d)

(170 - 174) cm

36.

The table is a frequency table showing the masses of a group of students. Find the median of the data.

a)

52

b)

52.5

c)

53

d)

53.5

37.

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 & then divide by two

c)

They are both the median

d)

None of the above

38.

What measure of central tendency (mode, median, or mean) would be best for the following data?

a)

Mode, because it is the one that shows up the most

b)

Median, because there is an extreme value.

c)

Mean, because there is no extreme value.

d)

There is no best measure of central tendency for this data

39.

Determine the extreme value of the set of data 5, 7, 4, 6, 8, 4, 14, 5, 4.

a)

4

b)

5

c)

8

d)

14

40.

The bar chart shows the number and the price of concert tickets sold by the school Theater Club. Calculate the mean.

a)

2.32

b)

4.52

c)

3.56

d)

3.00

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