Question: Consider the following frequency distribution: Class ...... Frequency 10 up to 20 ... 12 20 up to 30 .... 15 30 up to 40 ...

Consider the following frequency ...... Frequency
10 up to 20 ... 12
20 up to 30 .... 15
30 up to 40 ... 25
40 up to 50 ... 4

a. Construct a relative frequency Graph a relative frequency histogram.
b. Construct a cumulative frequency and a cumulative relative frequency What percent of the observations are at least 30 but less than 40? What percent of the observations are less than 40?

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