3/30~ 14.2 Notes 🕹️Practice Problems

A survey of high school students asked participants their gender and if they play video games. The data is summarized:

68  participants were males who play video games

 60 participants were males who do not play video games

 145 participants do not play video games

There were 279 participants in the survey

Complete the joint frequency table.

a

b

c

d

e

f

g

h

i

60

85

151

134

145

66

128

279

68

Tags

CCSS.8.SP.A.4

A survey of high school students asked participants about their gender and whether they play video games. The data is summarized: 68 participants were males who play video games, 60 participants were males who do not play video games, 145 participants do not play video games. There were 279 participants in the survey

c

d

e

145

85

66

60

134

68

Tags

CCSS.8.SP.A.4

The two-way frequency table below shows how many freshmen and sophomores are on the swimming or tennis team.

Complete the table.

a

b

c

d

4

13

18

9

Tags

CCSS.8.SP.A.4

Select the cells that represent the marginal frequencies ?

Tags

CCSS.8.SP.A.4

What data display would you use to show the composition of the individual parts to the whole and to make comparisons?

• Line Graph

• Segmented Bar Chart

• Scatter Plot

• Box Plot

• Bar Chart

What data display would you use to show a bivariate categorical data?

• Stem-and-leaf Plot

• Relative Frequency Table

• Box Plot

• Segmented Bar Chart

Match each definition with correct vocabulary.

• Numerical DATA

• Data that consists of numbers and can be MEASURED (e.g., height, weight, age).

• Marginal Frequency

• A display used to summarize bivariate categorical data. The table can also be called a contingency table or a joint frequency table

• Two Way Frequency Table

• Data that consists of categories or labels (e.g., eye color, gender, favorite sport) and cannot be measured

• Joint Relative Frequency

• The ratio of the joint frequency and the total number of data points.

• Categorical Data

• The total frequency for any row or column in a two-way frequency table