1. What data are represented by the stem-and-leaf plot below?
3 | 7 8 9
4 | 1 3 7
5 | 2 4
Key: 4 | 1 means 41
a. 37, 38, 39, 41, 43, 47, 52, 54
b. 73, 83, 93, 14, 34, 74, 25, 45
c. 7, 8, 9, 1, 3, 7, 2, 4
d. 37, 38, 39, 14, 34, 74, 25, 45
2. Find the mode and the median of the data in the stem-and-leaf plot below.
5 | 4 4 8
6 | 0 3 5
7 | 3 4 6
8 | 2 5
9 | 7 8
Key: 6 | 3 means 63
a. no mode; 73
b. 63; 73.5
c. 54; 73
d. no mode; 73.5
3. The stem-and-leaf plot shows the number of fish that were caught by several ships in a fishing fleet. How many ships caught 50 fish or fewer?
Stem Leaves
__________________________________
3 0 3 3 5 6
4 0 2 4 5 8 9 9
5 0 1 2 4
key: 2 | 4 means 24
a. 12
b. 16
c. 14
d. 13
My Answers:
1 c
2 d
3 a
1. A - 37, 38, 39 etc
2. C 54; 73
3. D the height of NBA basketball players
4. C - its a graph
5. D 35
6 D - Mean, the outliers are limited
7 C 6 years
8 is a short answer where you just need to find the means and modes of the plot
Sub to my youtube it would mean alot :D @Flixhe
Ms. Sue? Can you help me with this?
To find the answers to the questions:
1. In the stem-and-leaf plot, the stem represents the tens place of the numbers and the leaves represent the ones place. For example, the stem "3" with leaves "7 8 9" represents the numbers 37, 38, and 39. Similarly, the stem "4" with leaves "1 3 7" represents the numbers 41, 43, and 47. By reading the numbers represented by each stem and its corresponding leaves, we can see that the correct answer is option c: 7, 8, 9, 1, 3, 7, 2, 4.
2. To find the mode (the number(s) that appear most frequently) and the median (the middle value when the data is arranged in ascending order), we need to interpret the stem-and-leaf plot. The stem "5" has leaves "4 4 8", which represents the numbers 54, 54, and 58. The stem "6" has leaves "0 3 5", representing the numbers 60, 63, and 65. The stem "7" has leaves "3 4 6", representing the numbers 73, 74, and 76. The stem "8" has leaves "2 5", representing the numbers 82 and 85. And the stem "9" has leaves "7 8", representing the numbers 97 and 98. From this, we can see that the mode is 54 (appearing twice), and the median is 73.
Therefore, the correct answer is option c: 54; 73.
3. To determine the number of ships that caught 50 fish or fewer from the stem-and-leaf plot, we need to look at the stems. The stems "3" and "4" both have leaves that are less than or equal to 0, 3, and 4. Therefore, the ships with these stems will have caught 50 fish or fewer. Counting the ships with these stems, we find that there are 12 of them.
Hence, the correct answer is option a: 12.