Question

a zookeeper published the following stem - and - leaf plot showing the number of lizards at each major zoo in the country: 0 1 2 0 6 8 8 8 3 0 2 6 6 7 8 4 1 2 6 6 5 6 key: 2|0 = 20 lizards how many zoos have exactly 42 lizards?

Explanation:

Step1: Understand stem - and - leaf plot

In a stem - and - leaf plot, the stem represents the tens digit and the leaf represents the units digit. The key $2|0 = 20$ lizards shows the interpretation method.

Step2: Locate value for 42

Look at the row with stem 4. The leaves are 1, 2, 6, 6. Each leaf corresponds to a data - point with the tens digit from the stem and the units digit from the leaf. When the stem is 4 and the leaf is 2, it represents 42. Count the number of 2s in the leaf part of the row with stem 4.

Answer:

1