Lesson 1.2 Checkpoint

Arbitron, the rating service for radio audiences, places U.S. radio stations into categories that describe the kinds of programs they broadcast. The frequency table summarizes the distribution of station formats in a recent year. Make a bar chart to display the data. (LT 1.2.1 #1)

Format Count of stations

Adult contemporary 2,536

All sports 1,274

Contemporary hits 1,012

Country 2,893

News/talk/information 4,077

Oldies 831

Religious 3,884

Rock 1,636

Spanish language 878

Variety 1,579

Other formats 4,852

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Arbitron, the rating service for radio audiences, places U.S. radio stations into categories that describe the kinds of programs they broadcast. The frequency table summarizes the distribution of station formats in a recent year. Describe what you see. (LT 1.2.1 #2)

• The most frequent programs are other formats, news/talk/information, and religious, while the least frequent programs are oldies, Spanish language, and contemporary hits.

• The most frequent programs are oldies, Spanish language, and contemporary hits, while the least frequent programs are other formats, news/talk/information, and religious.

• The most frequent programs are adult contemporary, all sports, and contemporary hits, while the least frequent programs are other formats, news/talk/information, and country.

• The most frequent program is oldies and the least frequent is other formats.

The frequency table summarizes the distribution of day of the week for all babies born in a single week in the United States. Make a bar chart to display the data. (LT 1.2.1 #3)

Day Births

Sunday 7,374

Monday 11,704

Tuesday 13,169

Wednesday 13,038

Thursday 13,013

Friday 12,664

Saturday 8,459

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The frequency table summarizes the distribution of day of the week for all babies born in a single week in the United States. Describe what you see. (LT 1.2.1 #4)

• The most frequent days for babies to be born are Tuesday, Wednesday, Thursday.

• The least frequent days for babies to be are Sunday and Saturday.

• Both are true

• Both are false

Here is a pie chart of the radio station format data. What percent of the graph does the “Country” slice make up? Justify your answer. (LT 1.2.2 #1)

Format Count of stations

Adult contemporary 2,536

All sports 1,274

Contemporary hits 1,012

Country 2,893

News/talk/information 4,077

Oldies 831

Religious 3,884

Rock 1,636

Spanish language 878

Variety 1,579

Other formats 4,852

• 2893/25452 = 0.114 or 11.4%

• 25452/2893 = 8.798 or 8.798%

• It is 11%.

• Can't find the percent.

Here is a pie chart of the radio station format data. How many stations of the 25452 stations surveyed are "Rock" stations if it 6.43% of the stations? (LT 1.2.2 #2)

• 1,636 stations

• 1635 stations

• 163,656 stations

• Can't find it

Here is a pie chart of the 79,421 birthday data.

Day Births

Sunday 7,374

Monday 11,704

Tuesday 13,169

Wednesday 13,038

Thursday 13,013

Friday 12,664

Saturday 8,459

What percent of the graph does the "Friday" slice make-up? Justify your answer. (LT 1.2.2 #3)

• 12664/79421 = 0.159 or 15.9%

• 79421/12664 = 6.271 or 6.271%

• It is 16%

• Can't find the percent.

200 people were surveyed about their favorite ice cream. How many chose Kesar Pista? (LT 1.2.2 #4)

• 30 people

• 60 people

• 38 people

• None of these

A survey asked first-year college students, “How many miles is this college from your permanent home?” Students had to choose from the following options: 5 or fewer, 6 to 10, 11 to 50, 51 to 100, 101 to 500, or more than 500. The bar chart on the following page shows the percentage of students at public and private 4-year colleges who chose each option. Which of the following accurately compares the distribution of distance from home for students from private and public 4-year colleges? (LT 1.2.1 #5)

• Students who attend a private college are more likely to travel a farther distance to attend college.

• Students who attend a public college are more likely to travel a farther distance to attend college.

• Most students go to a college less than or equal to 5 miles from home.

• Both distributions peak at 11 to 50 miles from home.

Favorite vehicle colors may differ among countries. The bar chart displays data on the most popular car colors in a recent year for the United States and Europe. Write a few sentences comparing the distributions. (LT 1.2.1 #6)

• A: The most popular vehicle colors in the U.S. are white/pearl, black, and silver, while the most popular vehicle colors in Europe are silver, black, and gray.

• B: People in the U.S. prefer white/pearl and red as their vehicle color more than do people in Europe, while people in Europe prefer black, silver, and gray more than do people in the U.S.

• Both A and B

• Neither A or B