Unit 10 Review

The dot plot shows the number of packages mailed by the last 20 customers in a post office.

Which statement best describes the data shown in the dot plot?

• The peak of the data is at 5.

• The data distribution is symmetrical.

• The data are clustered from 0 to 2.

• The data distribution has gaps.

The list shows the number of medals won by athletes representing the United States of America during each of the Winter Olympic Games from 1980 to 2010.

5, 7, 10, 12, 12, 14, 21, 32, 38

Which statement about these data is true?

• The mean is 18.

• The interquartile range is 11.

• The range is 35.

• The median is 13.

The dot plot shows the wing lengths in millimeters for ten birds.

Which statement is supported by the data in the dot plot?

• There are more birds that have a wing length of 1 mm than birds that have wing length of 2 mm.

• There are more birds that have wing length of 5 mm than birds that have a wing length of 2 mm.

• More than half of the birds have wing lengths of less than 5 mm.

• Fewer than half of the birds have wing lengths greater than 1 mm.

On Saturday Kai gave his guinea pig 80 grams of food. The table shows the amount of each type of food he gave to the guinea pig.

Which percentage bar graph best represents the data?

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The stem and leaf plot shows the height in feet of every building taller than 50 feet in a country.

Which statement about the data is true?

• The most common height for these buildings is 77 feet.

• There are 3 buildings in the country that are between 50 feet tall and 59 feet tall.

• There are 16 buildings in the country that are taller than 50 feet.

• The number of buildings that are 70 feet tall is the same as the number of buildings that are 60 feet tall.

The list shows the area in square feet of each apartment available for rent in a building.

560, 592, 850, 518, 634, 710, 845, 620

What is the range of these areas in square feet?

The box plots summarize the attendance for the Spring musical and the Fall musical. Each musical was performed for six evenings.

Which statement best describes the data represented in the box plot?

• The range in attendance for the Fall musical is 85.

• The interquartile range for the Spring musical is 45.

• For half the evenings at the Fall musical, the attendance was less than 160 people.

• For half the evenings at the Spring musical, the attendance was between 155 and 200 people.

Dr. Oz recorded the weights in pounds of each dog coming into the animal clinic in one day. The box plot shows the summary of the results.

Which statement best describes the data represented in the box plot?

• One fourth of the dogs weighed less than 50 pounds.

• The median weight of the dogs is roughly 80 pounds.

• The mean weight of the dogs is 90 pounds.

• The greatest number of dogs weighed form 80 to 90 pounds.

The bar graph shows the flavors of gum bought yesterday by the customers at a store. Each customer bought only 1 flavor of gum.

Which statement is NOT supported by the data displayed in the bar graph?

• The same number of customers bought peppermint as the number of customers who bought cinnamon.

• The mode flavor was watermelon.

• There were 120 customers who bought gum yesterday.

• There were 2.5 times as many customers who bought spearmint as customers who bought peppermint.

Which data most likely have a variability for one school during a single school year?

• The cost of a slice of pepperoni pizza each day.

• The number of students absent each day.

• The amount of time for a lunch period each day.

• The library fee for the first day a book is overdue.