If class Midpoint in a frequency distribution of the ages of a group of persons are: 25, 32, 39, 46,53 and 60. Find:
a) The size of Class Interval
b) the class boundaries
c) the class limits, assuming the age qoutes is the age completed on the last birthday
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Answer:
1) Class interval is 7( because the diff between the number is called C.I which is 7)
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the correct answer is 7
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