The stem-and-leaf plot below gives the amount of money spent by each of 17 couples at a restaurant. Use the plot to answer the questions that follow.

Question

Amount of money spent (in dollars)
3 |
7
4
2 3 7
5 0013688
6 1567
739
Key: 3|7 means 37 dollars.
(a) What was the least amount spent in the 60s?
(b) How many couples spent an amount in the 30s?
(c) What was the greatest amount spent overall?

Answer 1

To analyze the stem-and-leaf plot provided, we need to interpret the data correctly.

The plot indicates the following amounts spent by the couples:

• For the 30s: 37, 32, 33, 37
• For the 40s: 42, 43, 47
• For the 50s: 50, 50, 51, 53, 56, 58
• For the 60s: 61, 65, 67
• For the 70s: 73, 79

Now let's answer each question:

(a) What was the least amount spent in the 60s?

• The amounts in the 60s are 61, 65, and 67. The least amount is 61 dollars.

(b) How many couples spent an amount in the 30s?

• The amounts spent in the 30s (37, 32, 33, 37) total 4 couples.

(c) What was the greatest amount spent overall?

• The greatest amount listed in the plot is 79 dollars (the amount is from the 70s).

In summary: (a) 61 dollars
(b) 4 couples
(c) 79 dollars