Examining Samples Worksheet With Answer Key printable pdf download

Examining Samples Worksheet With Answer Key

Name:

Examining Samples

Solve each problem.

1) A car company was trying to figure out if more men or more women purchased yellow cars. To do this they polled

all the customer who bought a yellow car in the last month. Their results are shown below:

Sample #

Men

Women

Based on the information presented what can you infer about who bought yellow cars?

Based on the information presented and the small samples gathered it is impossible to

make any meaningful assumptions.

2) A carpenter has accumulated a large collection of nails, screws and bolts, which he had randomly thrown together

into a bucket. Later he wanted to estimate how many of each he had. To do this he grabbed a handful from the

bucket. His results are shown below.

Sample #

nails

19 19 21 22 22 18 18 20

screws

22 22 18 21 21 18 19 22

bolts

18 18 19 21 18 20 20 22

Based on the information presented can you infer anything about the relationship between the number of

nails,screws and bolts in the bucket?

Because of the very small discrepancy in the quantities it is unlikely any deduction can

be made about the number of nails,screws or bolts in the bucket.

3) In a library there was a donation box for books. A librarian wanted to estimate how many fiction and how many

non-fiction books were in the box so she pulled out a sample. The results are shown below:

Sample #

Fiction

20 22 22 24 23

Non-Fiction

32 32 32 28 29

Based on the information presented can you infer anything about the types of books donated?

Based on the information presented there will be 27% more Non-Fiction books donated.

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Math

Examining Samples Worksheet With Answer Key