Question

An analyst has obtained the following data on monthly out-of-pocket expenditures ($) for prescription drugs for a sample of senior citizens.

What is the sample size n?

Monthly Expenditures	Frequency
1-25	240
26-50	165
51-75	80
76-100	15
101-125	5

Answer 1

We know that,

Sample size (n) is nothing but addition of all frequencies.

Hence,

Sample size (n)=240+165+80+15+5

Hence,

Sample size (n)=505

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