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Name: February 1, 2001 Score:

MATH 147

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Quiz 2

(2 pts.)

Problem 1. Circle T for a true statement, F for a false statement.

T F In a histogram, the height of the blocks represents crowding.

T F In a histogram with a long left tail the median is smaller than the average.

(3 pts.)

Problem 3. For the following list of numbers compute the standard deviation, average, and median. You may round calculations to the hundredths place.

-3, 4, 3, 8, -2

(5 pts.)

Problem 4. Construct a histogram from the data. Income level(In thousands of dollars) Percent

0-10 25

10-15 20

15-25 30

25-50 25