7.6G 7.12A Data Analysis STAAR Review

A survey of 150 employees at a company asked which type of transportation the employee used to get to work. The types of transportation and some of their percentages are shown of the circle graph.

How many more people use a car than ride a bicycle to get to work?

• 15

• 28

• 42

• 57

A salesperson made a bar graph of different brands of cars sold in a month. Based on the information in the graph, which car brands represented 60% of sales?

• Brand A and Brand B

• Brand A and Brand C

• Brand B and Brand C

• Brand C and Brand D

Students were surveyed to determine their favorite types of animals. The bar graph shows the number of students who selected each type of animal.

What percentage of the students surveyed selected “Bird” as their favorite type of animal?

• 20%

• 5%

• 6%

• 80%

Ursula surveyed 50 classmates about their favorite ice cream flavors. Each classmate chose one flavor. The results are shown in the circle graph.

How many more of Ursula’s classmates chose chocolate than chose vanilla?

• 8

• 6

• 34

• 16

Ms. Gonzales gathered data on the number of vowels in the first and last names of each of her students. The data are shown in the dot plot.

What percentage of the students have 5 or more vowels in their first and last names?

• A 21%

• B 63%

• C 37%

• D 70%

The dot plots show the numbers of apples picked by members of two different tour groups at an orchard. Which statement correctly compares these two data sets?

• The median of the data is the same for both data sets.

• The mode of the data is the same for both data sets.

• The range of the data is the same for both data sets.

• The distribution of the data is symmetrical for both data sets.

The box plots show the numbers of lessons completed by individual students enrolled in an online program at two different schools.Which statement is best supported by the data in the box plots?

• The range of the data for School 1 is greater than the range of the data for School 2.

• The median of the data for School 2 is greater than the median of the data for School 1.

• The interquartile range of the data for School 2 is greater than the interquartile range of the data for School 1.

• The students at School 1 completed more lessons than the students at School 2.

The dot plots show the numbers of children's books purchased by customers at two different bookstores on one day. Which statement is supported by the information in the dot plots?

• The mode of the data for Store 2 is greater than the mode of the data for Store 1.

• The range of the data for Store 1 is greater than the range of the data for Store 2.

• The mean of the data for Store 1 is greater than the mean of the data for Store 2.

• The median of the data for Store 2 is greater than the median of the data for Store 1.

The box plots summarize the number of semester hours students enrolled in a university and a community college completed during the fall semester. Which statement is best supported by the data in the box plots?

• The median of the data for the university is greater than the median of the data for the community college.

• The range of the data for the university is greater than the range of the data for the community college.

• The interquartile range of the data for the community college is greater than the interquartile range of the data for the university.

• The third quartile of the data for the community college is greater than the third quartile of the data for the university.

The manager of a music store surveyed a random sample of customers who shop in the store about their favorite type of music. The table shows the number of customers who selected each type of music. Based on the information in the table, which inference about the favorite type of music of all the customers who shop in the music store appears to be valid?

• They are certain to select rock or pop music.

• They are less likely to select country or rap music than rock music.

• They are more likely to select country music than jazz, classical, or rap music.

• They are certain to select any type of music other than jazz music.