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Prob & Stats Unit 2 Review So Far (Quantitative)

Total questions: 12

Worksheet time: 10mins

Name
Class
Date
1.

What is the upper class boundary for the class 23 - 35?

a)

35

b)

34.5

c)

35.5

d)

22.5

e)

23.5

2.

If the limits for a class were 20–38, the boundaries would be 19.5–37.5.

a)

True

b)

False

3.

What is the midpoint of the class 7-11 ?

a)

9.5

b)

9

c)

4

d)

2

4.

A histogram is a graph that represents the cumulative frequencies for the classes in a frequency distribution.

a)

True

b)

False

5.

Which type of graph represents the cumulative frequencies for the classes in a frequency distribution?

a)

Histogram

b)

Ogive

c)

Frequency Polygon

d)

Relative Frequency Histogram

6.

In a given data set, the maximum value is 76 and the minimum value is 13, what would be class width when using 6 classes?

a)

10

b)

10.5

c)

11

d)

15

7.
According to the portion of the frequency table given, how many people have an MBA?
a)
9
b)
60
c)
20
d)
not enough information
8.
What is the formula for relative frequency?
a)
f*N
b)
f-N
c)
f/N
d)
(f+x)/N
9.
How many employees have a salary less than $22,000?
a)
50
b)
350
c)
0
d)
10
10.

What would be the cumulative frequency for the third class?

a)

5

b)

12

c)

17

d)

18

11.

What type of graph is shown?

a)

Frequency Histogram

b)

Frequency Polygon

c)

Ogive

d)

Relative Frequency Histogram

12.
Is a histogram the same as a bar graph?
a)
Yes, because they both use intervals.
b)
No, because a histogram displays numerical data while a bar graph displays categorical data.
c)
Yes, because they both use bars to display data.
d)
No, because a histogram displays categorical data while a bar graph displays numerical data.