Examining Samples Worksheet printable pdf download

Examining Samples Worksheet

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Examining Samples

Solve each problem.

1) 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 18 19 19 18 20 22

screws

20 19 20 22 20 20 21

bolts

19 20 21 21 21 21 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.

2) For a canned food drive there were 3 types of cans vegetables donated: peas, carrots and green beans. To estimate

how many of each type were donated, you pull out a sample. The results are shown below:

Sample #

peas

carrots

green beans

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

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

make any meaningful assumptions.

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

62 61 59 59 58 60

Non-Fiction

52 54 50 54 54 50

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

Based on the information presented there will be 12% more Fiction books donated.

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Math

Examining Samples Worksheet