Question

The stem-and-leaf plot shows the ages of customers who were interviewed in a

survey by a store.


How many customers were older than 45?


Ages of Store Customers



1| 0 2 3 3 6 8


2| 1 1 3 4 5 6 6 8 9


3| 2 2 4 4 4 5 7


4|1 2 3 3 5 8


5| 0 0 1 5 6


6| 2 4 5 5


7| 3


Key: 1| 0 = 10

Answer 1

11

Explanation:

Customer older than 45 will be in stem 4| but after leaf 5, 5|, 6|, and 7|.

And those are:

4| 8 ----- (1)

5| 0 0 1 5 6 (5)

6| 2 4 5 5 (4)

7| 3 (1)

total = 1+5+4+1 = 11