Algebra I Unit I Test: One-Variable Statistics

For five days in January, Buffalo recorded the following daily high temperatures: 5^◦, 2^◦, 7^◦, 9^◦, and 7^◦. Which statement about the temperatures is true?

• median = mode

• median < mode

• mean > median

• mean = median

Corinne is planning a beach vacation in July and is analyzing the daily high temperatures for her potential destination. She would like to choose a destination with a high median temperature and a small interquartile range. She constructed box plots shown in the diagram above. Which destination has a median temperature above 80 degrees and the smallest interquartile range?

• Ocean Beach

• Whispering Palms

• Serene Shores

• Pelican Beach

Which survey is least likely to contain bias?

• surveying a sample of people leaving a movie theater to determine which flavor of ice cream is the most popular

• surveying the members of a football team to determine the most watched TV sport

• surveying a sample of people leaving a library to determine the average number of books a person reads in a year

• surveying a sample of people leaving a gym to determine the average number of hours a person exercises per week

The dot plot shows the number of books students read during the summer. How many students read at most eight books?

• 9

• 6

• 5

• 4

Find the mean of the data set.

Find the range for the set of data.

A statistics class surveyed some students during one lunch period to obtain opinions about television programming preferences. The results of the survey are summarized in the table above. Determine the conditional relative frequency of preferring drama programming if you are a female. Round your answer to the nearest percent.

• A. The distribution is symmetric.

• B. The distribution is not symmetric.

• C. The distribution has an outlier.

• The distribution has a gap of data.

What is the best description for the shape of distribution of the data on the dot plot shown?

• bimodal

• skew

• symmetric

• uniform

What is the best description for the shape of distribution for the data shown?

• uniform

• bell-shaped

• bimodal

• skew

• symmetric