Question

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a pet store owner had her staff count the number of fish in each tank. fish per tank stem leaf 0 2 4 1 1 2 7 2 0 2 8 3 0 2 3 4 5 7 4 1 1 5 5 1 3 6 9 6 5 5 8 8 how many tanks have at least 17 fish? tanks

Explanation:

Step1: Understand stem - and - leaf plot

In a stem - and - leaf plot, each number is split into a stem and a leaf. For example, in the row with stem 1 and leaf 2, the number is 12.

Step2: Count tanks with at least 17 fish

Count the number of data - points starting from the number 17.
For stem 1: There are 2 numbers (17, 12, 11), 2 of them are at least 17.
For stem 2: There are 3 numbers (20, 22, 28).
For stem 3: There are 5 numbers (30, 32, 33, 34, 35, 37).
For stem 4: There are 3 numbers (41, 41, 45).
For stem 5: There are 4 numbers (51, 53, 56, 59).
For stem 6: There are 4 numbers (65, 65, 68, 68).
Sum them up: \(2 + 3+5 + 3+4 + 4=21\).

Answer:

21