Quiz about 2.1 Frequency Distribution Review

Question 1

What is the formula for relative frequency?

Accepted Answer

f/N

Answer

f*N

Answer

f-N

Answer

(f+x)/N

Question 2

According to the portion of the frequency table given, how many people have an MBA?

Accepted Answer

20

Answer

9

Answer

60

Answer

not enough information

Question 3

A table that shows classes or intervals of data entries with a count of the number of entries in each class.

Accepted Answer

Frequency distribution

Answer

Frequency polygon

Answer

Histogram

Answer

Ogive

Question 4

More people had between __ and __ cups of coffee than any other range.

Accepted Answer

8-11

Answer

0-3

Answer

12-15

Answer

16-19

Question 5

Which interval has 400 employees?

Accepted Answer

33-43

Answer

0-10

Answer

77-87

Answer

66-76

Question 6

How many employees have a salary less than $22,000?

Accepted Answer

350

Answer

50

Answer

0

Answer

10

Question 7

Approximately how many items were longer than 34 cm?

Accepted Answer

7

Answer

None

Answer

8

Answer

7.5

Question 8

A florist recorded the number and cost of flower bouquets that were sold daily and recorded the data below. What is the frequency of a bouquet that cost at least $40?

Accepted Answer

15

Answer

2

Answer

22

Answer

37

Question 9

What is incorrect about the following histogram?

Accepted Answer

The intervals overlap

Answer

The intervals are too small

Answer

The graph does not start at 0

Answer

The axes are not labeled.

Question 10

Is a histogram the same as a bar graph?

Accepted Answer

No, because a histogram displays numerical data while a bar graph displays categorical data.

Answer

Yes, because they both use intervals.

Answer

Yes, because they both use bars to display data.

Answer

No, because a histogram displays categorical data while a bar graph displays numerical data.

Question 11

Rhaul measured the heights of the apple trees in an orchard. What percent of the trees are 5-9 feet tall?

Accepted Answer

19%

Answer

31%

Answer

22%

Answer

10%

Question 12

Emily is making a histogram for the data 12, 24, 56, 7, 34, 75, 86, 78, and 96.  What is the most appropriate first interval?

Accepted Answer

0-10

Answer

0-5

Answer

0-50

Answer

0-100

Question 13

Question 13.

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 14

Question 14.

Accepted Answer

C

Answer

A

Answer

B

Answer

D

Question 15

The histograms show the scores for the first and second block classes. Assuming 69 and above is passing, which of the following is true?

Accepted Answer

The number of students that passed the test is the same in both classes.

Answer

More students passed in first block than second block.

Answer

More students passed in the second block than first block.

Answer

Cannot be determined based on the graphs given.

Question 16

This is an ogive.

Accepted Answer

false

Answer

true

Question 17

What type of graph is shown?

Accepted Answer

Ogive

Answer

Hisotgram

Answer

Frequency Polygon

Answer

Line graph

Question 18

What is the relative frequency for selecting a teen given that the person likes chocolate?

Accepted Answer

.112

Answer

.267

Answer

.164

Answer

.056

Question 19

Which of these data displays has one anchor to the x-axis?

Accepted Answer

Ogive

Answer

Frequency Polygon

Answer

Histogram

Answer

Time Series Graph

Question 20

Which Greek letter is the symbol for "the sum of"?

Accepted Answer

Sigma

Answer

Iota

Answer

Rho

Answer

Theta

Question 21

Which of the following is a true statement about Frequency Polygons?

Accepted Answer

They have two anchors to the horizontal axis

Answer

They have one anchor to the horizontal axis

Answer

The vertical axis is cumulative frequency

Answer

The horizontal axis is class endpoints

Question 22

Which of the following is the correct formula to find class width?

Accepted Answer

(max-min)/(# of classes), round up to the next integer

Answer

(max-min)/2, round up to the next integer

Answer

(max-min)/(# of classes), round normally

Answer

(max+min)/2, round normally

Answer

(max-min)/(number of data), round up to the next integer

Question 23

This frequency table is set up correctly.

Accepted Answer

False

Answer

True

Question 24

What would be the cumulative frequency for the third class?

Accepted Answer

18

Answer

5

Answer

12

Answer

17

Question 25

What would be the class BOUNDRIES for the second class?

Accepted Answer

39.5 - 79.5

Answer

40 - 79

Answer

40.5 - 79.5

Answer

5 - 12

2.1 Frequency Distribution Review

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