Math 1070-003
Practice for Quiz 1
9 January, 2013
This quiz will last 15 minutes and consists of 2 problems (front and back).
Answer the questions in the spaces provided. You must show all of your work
to receive credit. You may not use any outside notes or texts on this quiz.
You may use a scientific or graphic calculator. Good luck!
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1. 30 students from this class were asked their ages. Use the data from their responses
below to answer the questions that follow:
18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 21, 22, 22, 23, 24, 27, 29, 34
(a) (10 points) Draw a histogram for the data with an appropriate number of intervals.
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(b) (8 points) Give a five-number summary for the data. (Hint: A five number sum
mary includes the minimum, maximum, and the 1st, 2nd, and 3rd quartiles.)
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(c) (2 points) Give the interquartile range of the data.
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