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2R Form 2 chapter 12

Total questions: 37

Worksheet time: 1hrs 14mins

Name
Class
Date
1.
How many students scored more than 80%?
a)
10
b)
13
c)
7
d)
15
2.
What is the mode of the scores?
a)
24
b)
14
c)
34
d)
30
3.
How many students have more than 1,000 songs on their MP3 player?
a)
5
b)
16
c)
10
d)
4
4.
How many cities have temperatures between 70 degrees and 99 degrees?
a)
44
b)
34
c)
26
d)
62
5.
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
6.
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.
7.

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

a)

14

b)

16

c)

16.5

d)

18

8.

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

9.
Which team has the tallest player?
a)
Team A
b)
Team B
10.
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
11.
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
12.
Measures of central tendency which is greatly affected by extremely low or high scores.
a)
Mean
b)
Median
c)
Mode
d)
Frequency
13.

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

14.
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
15.

The football team had the following gains and losses during their last run:

-9, 8, 7, -4, 3 . What is their MEDIAN of their runs?

a)

7

b)

3

c)

8

d)

-4

16.

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 people are in line?

a)

32 People

b)

32 Min.

c)

12.5 Min.

d)

12.5 People

17.
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
18.
Find the mean of these numbers:
5,11,2,12,4,2
a)
4.1
b)
6
c)
4.5
d)
4
19.

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

20.

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

21.

Find the median for the set of numbers 4, 8, 2, 9, 5, 4, 3, 10

a)

3

b)

4

c)

4.5

d)

8

22.

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

23.

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

24.

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

25.
Harley surveyed his classmates about how many siblings they have and got the following data: 0, 1, 3, 5, 4, 2, 2, 9, 1, 2, 0, 1, 1, 1, 1, 3  Which  measure is best measure of center of the data?
a)
Mean
b)
Median
c)
Mode
d)
Range
26.

Determine the score obtained by 33 participants in a contest:

Score : [2] [4] [6] [8] [10]
Frequency: [5] [7] [3] [8] [10]

a)

5

b)

6

c)

7

d)

8

27.

What is the extreme value in the set of data below?

-6, 0, 1, 2, 2, 4, 5

a)

0

b)

2

c)

4

d)

-6

28.

Below shows the score of mathematics exam of 25 students. Determine the modal class for the data below:

a)

40-44

b)

50-54

c)

60-64

d)

65-69

29.

Table shows the height of 25 trees planted by Raj

Calculate the mean of the highest of the tree

a)

20.4

b)

24.6

c)

24.2

d)

20.2

30.
The table shows the result when three coins were tossed simultaneously 30 times. 
What is the mean? 
a)
1
b)
1.57
c)
2.2
d)
3
31.
Your basketball team plays 5 games.
Your team scores:
10 points in the first game,
3 points in the second game,
2 points in the third game,
5 points in the fourth game, and
0 points in the fifth game.
What was the mean number of points your team scored for all 5 games?
a)
3 points
b)
4 points
c)
5 points
d)
10 points
32.
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
33.
What is the mode of the data set:
Black  Blue  Red
Pink  Black  Black
Gray  Green  Blue
Blue  Blue  Red
Yellow  Blue  Red
a)
Blue and Black
b)
Blue
c)
Red
d)
Black
34.
For a data containing 15 items arranged in ascending order, what item is the median of the data
a)
7th item
b)
8th item
c)
6th and 7th item 
d)
7th and 8th item
35.

What is the mode for this table of data?

a)

3

b)

1

c)

13

d)

15

36.
How many students take the bus to school?
a)
35
b)
20
c)
10
d)
15
37.

Find the mean.

a)

10

b)

20

c)

30

d)

40

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