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Statistics Review

Total questions: 47

Worksheet time: 2hrs 27mins

Name
Class
Date
1.

How do you find the median of a data set that has two middle numbers?

a)

You pick the higher middle number

b)

You pick the lower middle number

c)

Add the two middle numbers and divide it by 2

d)

Subtract the two middle numbers and divide by 2

2.

Which measure of center would best represent this data?

a)

Mean

b)

Median

c)

Mode

d)

Mean OR median

3.

Which measure of central tendency best represents this data?

a)

Mean

b)

Median

c)

Mode

d)

Mean OR median

4.

The mean of this data set is 17.8. What would happen to the mean if 40 was added to the data set?

a)

The mean would not change

b)

The mean would go up

c)

The mean would go down

5.

Which class has the higher median?

a)

1st period

b)

2nd period

c)

They have the same median

6.

Which class did better on the test?

a)

1st period

b)

2nd period

c)

They both performed the same

7.

How is the data distributed in this histogram?

a)

Symmetrically

b)

Skewed Right

c)

Skewed Left

8.

How is the data distributed in this histogram?

a)

Symmetrically

b)

Skewed Right

c)

Skewed Left

9.
What is the range?
a)
average
b)
biggest-smallest
c)
the middle #
d)
# happening the most
10.
What is the mode?
a)
# occurring the most
b)
the average
c)
biggest - smallest
d)
the middle #
11.
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
12.
find the median of
20 30 40 50 60
a)
50
b)
40
c)
1
d)
5
13.
What is the mean?
a)
# happening the most
b)
the number in the middle
c)
biggest-smallest
d)
the average
14.
Find the median, mode and range: 
3, 5, 7, 9, 11, 8, 3
a)

median:9  mode:3  range:8

b)

median:6  mode:3  range:7

c)

median:7  mode:3 range:8

15.
What is the median?
a)
biggest- smallest
b)
average
c)
the middle #
d)
# that happens the most
16.
Which interval shows the greatest number of pets?
a)
15-19
b)
0-4
c)
5-9
d)
10-14
17.
In the last 5 games, Kevin Durant scored 22, 22, 18, 12, and 21 points. What is Durant's Mean (Average) score per game?
a)
 19 points per game
b)
95 points per game
c)
18.6 points per game
d)
22 points per game
18.
What was the day with the least amount of cars sold? 
a)
Monday
b)
Tuesday
c)
Wednesday
d)
Thursday
19.

Calculate the RANGE for the data set: 6, 7, 12, 8, 7, 4, 8, 8, 7

a)

7

b)

7.44

c)

8

d)

7 and 8

20.
33, 25, 42, 25, 31, 37, 46, 29, 38
What is the third quartile of the data?
a)
37
b)
38
c)
40
d)
46
21.
33, 25, 42, 25, 31, 37, 46, 29, 38
What is the first quartile of the data?
a)
25
b)
27
c)
29
d)
33
22.
33, 25, 42, 25, 31, 37, 46, 29, 38
What is the interquartile range of the data?
a)
8
b)
9
c)
13
d)
21
23.
What is the interquartile range of plot A?
a)
6
b)
8
c)
15
d)
28
24.

What percentage of the data is between 90 and 140?

a)

25 %

b)

50%

c)

75%

d)

100%

25.

What percentage of the data is between 40 and 90?

a)

25 %

b)

50%

c)

75%

d)

100%

26.

What percent of the data is between 30 and 35 on the number line?

a)

25%

b)

50%

c)

75%

d)

100%

27.

What is the median of this data?

a)

40

b)

90

c)

100

d)

140

e)

150

28.
Which club has the smaller spread?
a)
Cruisers
b)
Car Hops
29.
What is the MEDIAN of this data
a)
95
b)
90
c)
100
d)
40
30.

Which has a greater spread (range)

a)

Science

b)

Math

31.

Which chapter was more difficult for students?

a)

chapter 9

b)

chapter 10

32.
Which measure of center best represents this set of data?
12, 13, 11, 16, 31, 14, 10, 15
a)
Mean
b)
median
c)
mode
33.
The salary of the employees in the office were $15,000; $18,000; $16,000; $14,000; $90,000; and $17,000.  What is the best measure of the central tendency of the salaries?
a)
Mean
b)
Median
c)
Mode
d)
Range
34.

What measure of center is best to use when we have outliers?

a)

mean

b)

median

c)

mode

d)

range

35.
Find the mean of these numbers:
4,2,5,6,3
a)
2
b)
5
c)
4
d)
6
36.
The heights of some students are given.
158cm     172cm      164cm
164cm     167cm      159cm
 What is the range of the heights?
a)
13cm
b)
14cm
c)
164cm
d)
330cm
37.
What data value is the upper quartile (Q3)?
a)
64
b)
62
c)
66
d)
58
38.
Calculate the interquartile range of the following data17, 18, 18, 19, 20, 21, 21, 23, 25
a)
3
b)
4
c)
5
d)
8
39.

What is the standard deviation for the data given:

5, 10, 7, 12, 0, 20, 15, 22, 8, 2

a)

6.89

b)

10.1

c)

7.26

d)

9

40.

What is the standard deviation for the data population given:

{12, 13, 29, 18, 61, 35, 21}

a)

293.67

b)

15.87

c)

17.14

d)

41.98

41.

Given that the data is symmetric, which pair of measures should be used to represent the data?

a)

center: median

spread: standard deviation

b)

center: mean

spread: IQR

c)

center: mean

spread: standard deviation

d)

center: median

spread: IQR

42.

Which measure of spread should be used to describe the distribution?

a)

standard deviation

b)

interquartile range

c)

range

d)

median

43.

What is the shape of the distribution?

a)

symmetric

b)

uniform

c)

skewed to the right

d)

skewed to the left

44.

Because this distribution is ____________ to the ___________, we would use the ______________ for the center and the _____________ for the spread of the data.

a)

symmetric, middle, median, IQR

b)

skewed, left, median, IQR

c)

skewed, left, mean, IQR

d)

skewed, right, median, standard deviation

45.

Check all that apply:

The IQR is the

a)

max - min

b)

Interquartile Range

c)

measure of spread that pairs with the mean

d)

Q3 - Q1

46.
Gabriella’s quiz grades are shown below.
88, 92, 92, 96, 98
Gabriella scored a 20 on her sixth quiz. What effect does this score have?
a)
The low score causes the median to increase.
b)
The low score causes the median to decrease.
c)
The low score causes the mean to increase.
d)
The low score causes the mean to decrease.
47.
The data set below has an outlier of 42.
2, 5, 12, 15, 19, 4, 6, 11, 16, 18, 12, 12, 42
What effect does removing the outlier have on the distribution of the data?
a)
The mean will decrease
b)
The median will decrease
c)
The mean will increase
d)
The median will increase

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