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:
1A
2D
3C

I feel your struggle help pleeeeeeeeeeeaseeeeeee

Anyone???

1. The stem-and-leaf plot represents the following data:

3 | 7 8 9
4 | 1 3 7
5 | 2 4

We can read the stem-and-leaf plot to obtain the following data values: 37, 38, 39, 41, 43, 47, 52, 54

Therefore, the correct answer is a. 37, 38, 39, 41, 43, 47, 52, 54.

2. The stem-and-leaf plot represents the following data:

5 | 4 4 8
6 | 0 3 5
7 | 3 4 6
8 | 2 5
9 | 7 8

To find the mode, we look for the value that appears most frequently. In this case, there is no value that appears more than once, so there is no mode.

To find the median, we arrange the data in ascending order: 40, 43, 45, 48, 60, 63, 73, 74, 75, 82, 85, 97

Since there are 12 data points, the median will be the average of the 6th and 7th values, which are 63 and 73. Therefore, the median is (63 + 73) / 2 = 68.

Therefore, the correct answer is d. no mode; 73.5.

3. The stem-and-leaf plot shows the number of fish caught by several ships in a fishing fleet:

Stem Leaves
__________________________________
3 0 3 3 5 6
4 0 2 4 5 8 9 9
5 0 1 2 4

To determine the number of ships that caught 50 fish or fewer, we need to count the number of leaves (values) in the stems 3, 4, and 5.

Stem 3 has 6 values (0, 3, 3, 5, 6).
Stem 4 has 8 values (0, 2, 4, 5, 8, 9, 9).
Stem 5 has 5 values (0, 1, 2, 4).

Adding up these values, we have a total of 6 + 8 + 5 = 19 values.

Therefore, the correct answer is d. 13.

1. To determine the data represented by the stem-and-leaf plot, you need to read the numbers off the plot. Each stem represents the tens digit, and the leaves represent the ones digit. Using the given key, you can translate the stems and leaves into the actual numbers.

Looking at the plot:
- The stem "3" has leaves "7", "8", and "9". So, the numbers represented are 37, 38, and 39.
- The stem "4" has leaves "1", "3", and "7". So, the numbers represented are 41, 43, and 47.
- The stem "5" has leaves "2" and "4". So, the numbers represented are 52 and 54.

Combining all the numbers, the data represented by the stem-and-leaf plot is: 37, 38, 39, 41, 43, 47, 52, and 54.

Therefore, the correct answer is option (a) 37, 38, 39, 41, 43, 47, 52, 54.

2. To find the mode and median from the stem-and-leaf plot, you need to determine the most frequently occurring value and the middle value of the data, respectively.

Looking at the plot:
- The mode is the value(s) that appear most frequently. In this case, the value "4" appears three times (stem "5" with leaves "4" and stem "6" with leaves "4" and "8"). So, the mode is 4.
- The median is the middle value when the numbers are arranged in ascending order. In this case, the numbers are already sorted. The middle value is between the 4th and 5th number, which are 44 and 63 respectively. So, the median is (44 + 63)/2 = 53.5.

Therefore, the correct answer is option (d) no mode; 53.5.

3. To determine the number of ships that caught 50 fish or fewer, you need to count the stems that represent numbers equal to or less than 50.

Looking at the plot:
- The stem "3" represents numbers greater than 30, so it is not relevant.
- The stem "4" has leaves "0", "2", "4", and "5". So, it represents numbers 40, 42, 44, and 45.
- The stem "5" has leaves "0", "1", and "2". So, it represents numbers 50, 51, and 52.

Combining both stems, you have 6 different numbers (40, 42, 44, 45, 50, and 51) that are 50 or less.

Therefore, the correct answer is option (b) 6.