8. Consider the following frequency distribution 30-under 40 What is the midpoin

Question

8. Consider the following frequency distribution 30-under 40 What is the midpoint of the nrst class? a) 10 b) 20 9. Consider the following frequency distribution: Class Interval 15 30 What is the relative frequency of the first class? a) 0.15 b) 0.30 c) 0.10 d) 0.20 e) 0.40 10 A person has decided to construct a frequency distribution for a set of data containing 60 numbers. The lowest number is 23 and the highest number is 68. If 5 classes are used, the class width should be approximately a) 4 b) 12 c) 8 d) 5 e) 9 11. Consider the relative frequency distribution given below: Class Interval Relative Frequency 0.2 20 under 40 0.3 40-under 60 60-under 80 80-under 100 0.1 40? There were 60 numbers in the data set. How many numbers were in the interval 20-under a) 12 b) 200 c) 40 d) 10 e) 15 automobile 12. A recent survey of U.S. automobile owners showed the following preferences for exterior colors

Explanation / Answer

9.

The relative frequency of the first class is:

The frequency of 10-under20 class intereval by total frequency

=15/15+25+10

=.30

B is the option

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