1. | In a stem-and-leaf plot, ______. | |||||

a key is used to describe what the numbers in the plot represent. | ||||||

the stems are on the right side and the leaves are on the left side | ||||||

0 can never be a stem | ||||||

0 can never be a leaf | ||||||

Hint | ||||||

2. | Refer to the stem-and-leaf plot below. | |||||

Five numbers are represented in the stem-and-leaf plot. | ||||||

Most of the numbers fall between 30 and 49. | ||||||

Sixty is the greatest number in the data set. | ||||||

Four numbers are represented in the stem-and-leaf plot. | ||||||

Hint | ||||||

3. | Find the mode of the set of data. 24, 25, 30, 31, 31, 33, 34, 38, 41, 42, 44, 48, 49, 67 |
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67 | 34 | |||||

36 | 31 | |||||

Hint | ||||||

4. | Find the median of {55, 21, 21, 69, 71}. | |||||

21 | 47.4 | |||||

71 | 55 | |||||

Hint | ||||||

5. | You have scores of 62, 75, and 90 on three of your history exams. What do you need to get on your fourth exam in order to have a mean of 80? | |||||

97 | 93 | |||||

80 | 100 | |||||

Hint | ||||||