Consider the following relative frequency distribution: Class ...... Relative Frequency 220 up to 210 ... 0.04 210

Question:

Consider the following relative frequency
Class ...... Relative Frequency
220 up to 210 ... 0.04
210 up to 0 .... 0.28
0 up to 10 .... 0.26
10 up to 20 ..... 0.22
20 up to 30 ..... 0.20
a. Suppose this relative frequency is based on a sample of 50 observations. Construct a frequency How many of the observations are at least 210 but less than 0?
b. Construct a cumulative frequency How many of the observations are less than 20?
c. Graph a relative frequency polygon.

Distribution
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