Data and Statistics Practice Test

Collins surveyed 60 seventh graders about their favorite sport. Each person selected one sport. How many students selected soccer as their favorite?

• 15

• 20

• 35

• 40

The number of points scored by Lilian and Naomi in their last four games is displayed in the graph. Which of the following statements is best supported by the data?

• In Game 2 the number of points scored by Lillian was 6 times the number of points scored by Naomi.

• The total number of points scored by Lillian and Naomi in Game 3 was seven times the number of points scored by Lillian in Game 2.

• In Game 4 the number of points scored by Naomi was twice the number of points scored by Lillian.

• The total number of points scored by Lillian and Naomi in Game 4 was seven times the number of points scored by Lillian in Game 2.

The dot plots show the number of days of rain for the first two weeks of April for two cities. Which statement is best supported by the data?

• 
  The distributions of the data for Barnesville and Jameson City are approximately symmetrical.

• The median number of days of rain for Jameson City is greater than the median number of days of rain for Barnesville.

• The mode for the data of days of rain for Jameson City is less than the mode for the data of days of rain for Barnesville.

• The range for the data of days of rain for Barnesville is greater than the range for the data of days of rain for Barnesville.

Johan planted tulips and sunflowers in his garden. The box plots show the heights of these plants. Which of the following statements is best supported by the data?

• The data for the sunflowers are more symmetrical than the data for the tulips.

• The median of the data for the sunflowers is less than the median of the data for the tulips.

• The range of the data for the sunflowers is equal to the range of the data for the tulips

• The data for both types of flowers are skewed to the right.

Jose conducted a random survey at the mall to determine 40 teenagers' favorite category of events to watch in the Summer Olympics. The results are shown in the bar graph. Based on the information in the graph, which inference about the general population of teenagers is valid?

• Girls like track and field events more than boys.

• Boys like track and field events more than gymnastics and water sports events combined.

• More teenagers like gymnastics than water sports events.

• Boys like water sports events more than girls do.

The manager of a Simply Sweet bakery surveyed a random sample of 150 of the shop's customers about their favorite flavor of cupcake. The table shows the number of customers who selected each flavor of cupcake.
Based on the information in the table, which inference about the favorite flavor of cupcake of all of the shop's customers appears to be invalid?

• Less than one-third are likely to select a chocolate cupcake.

• At least half are likely to select a lemon, peanut butter, or red velvet cupcake.

• At least half are likely to select a chocolate or vanilla cupcake.

• One-third are likely to select a red velvet or peanut butter cupcake.