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5 Nov 2021
Given information
Table constitute of the results of the telephone poll of six hundred adult Americans who were asked about what they think constitutes a middle-class income. The table also, include left endpoint, but not the right endpoint.
The results are:
Step-by-step explanation
Step 1.
Frequency of a data point is the number of times the data point occurs in a data set.
Relative frequency is the ratio of frequency of a given class to the sum of frequencies.
Let be the frequency of a class and be the sum of the frequencies.
Then, relative frequency of that class is:
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