statistics

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Is this a descriptive study or an inferential study. I say descriptive......

The table below shows the average income by age group for residents of a small mid-western town in 2001 based on a sample of 200 individuals from each group.

Age Group Average Income
18 â€“ 25 \$ 19,256
26 - 40 \$ 28,456
41 - 55 \$ 35,852
56 - 71 \$ 28,986
Over 72 \$ 19,258

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