Drawing Inference Test Review

The circle graph describes the books checked out of the library for 

            one day.

         A total of 400 books were checked out. How many more sports 

         books than novels were checked out?

•  A 120 books

•  B  72 books

•   C  48 books

• D  60 books

Eva gathered samples for the average monthly temperatures in degrees of  two cities and calculated the five-number summaries.

Which statement is best supported by the information in the table?

• The interquartile range is greater for City A than for City B.

• About 50% of the sample temperatures for City A are between 32 and 45 degrees while about 50% of the sample temperatures for City B are between 37 and 48 degrees.

• About 50% of the sample temperatures for City A are between 45 and 72 degrees while about 50% of the sample temperatures for City B are between 48 and 75 degrees.

• The range for City A is the same as the range for City B.

Students in two science classes were asked to write a research paper. The students used the Internet to find websites related to their research topics.

Based on the information in the dot plots which information about the Websites visited is valid?

• A Class A has a range of 4 and a median of 7; Class B has a range of 3 and

  a median of 4.

• B Class A has a range of 7 and a median of 4; Class B has a range of 4 and

  a median of 3.

• C Class A has a range of 4 and a median of 7; Class B has a range of 4 and

  a median of 3.

• D Class A has a range of 7 and a median of 4; Class B has a range of 3 and

  a median of 4.

A random sample of 50 was taken from a shipment of 12,000 light bulbs. There were 2 broken bulbs in the sample. How many broken bulbs would you expect in the entire shipment?

• 240

• 480

• 2,400

• 4,800

 Cary is writing an essay for his English class. The dot plot shows the 

  Number of vowels in each word of his essay. 

 Approximately what percent of the words in Cary’s essay contain  more than 2 vowels?

• A 67%

• B 33%

• C 43%

• D 17%

The amount of time, in seconds, that a city bus stops at a bus stop is shown for two drivers in a sample of 10 stops: 

Driver A: 25, 26, 27, 27, 29, 30, 32, 34, 36, and 37 seconds 

Driver B: 30, 30, 32, 32, 33, 33, 33, 35, 35, and 35 seconds 

         

         Based on the data in the dot plot, which information is true?

•         A  The medians for Drivers A and B are 29.5 and 33 seconds; 

                the ranges for Drivers A and B are 12 and 5 seconds, respectively. 

•  B  The medians for Drivers A and B are 33 and 29.5 seconds; 

                the ranges for Drivers A and B are 5 and 12 seconds, respectively. 

•  C The medians for Drivers A and B are 29.5 and 33 seconds; 

                the ranges for Drivers A and B are 5 and 12 seconds, respectively. 

•  D The medians for Drivers A and B are 33 and 29.5 seconds; 

                the ranges for Drivers A and B are 12 and 5 seconds, respectively.

A town has 35,000 registered voters. A random sample of 500 voters finds that 125 are in favor of a new dog park. How many are likely to vote for the dog park?

• 25

• 125

• 2,625

• 8,750

The double box plot shows the cost of the top-selling lunch menu items at two local restaurants.

Determine which is NOT a true inference about the two populations. 

• A The range of the data for Michelle’s BBQ is less than the range 

       for Joey’s Grille.

•  B  Only one set of data is symmetrical.

•  D The median prices are the same for Joey’s Grille and 

       Michelle’s BBQ.

•  C The interquartile range of the data for Joey’s Grille is equal to 

       the interquartile range of the data for Michelle’s BBQ.

Four students participated in a Walk-a-Thon to raise money for a charity. The distances each student walked on Saturday and Sunday are displayed in the stacked bar graph.

Who walked the most total miles during the Walk-a-Thon? How many total miles did that person walk?

The dot plot shows the number of eagles seen by members of a   birding club.

What percent of the members have seen more than 5 eagles?

• A  55%

• B  60%

• C  40%

• D  20%