Answer:
The answer to your problem is, D. The range is the best measure of variability, and it equals 32.
Explanation:
We know the scores earned in a flower-growing competition are represented in the stem-and-leaf plot.
- 1 7, 9
- 2 1, 5, 9
- 3 0, 1, 2
- 4 6, 9
The key will equal 2|1 means 21
Which we conclude to 17, 19, 21, 25, 29, 30, 31, 32, 46, 49.
Quartile:
- Quartile 1, Q1 = 21
- Quartile 2, Q2 = 29.5
- Quartile 3, Q3 = 32
- Third Quartile, Q3 = 32
Median, Minimum, Maximum, & Range:
- Median, Q2 = 29.5
- Minimum, Min = 17
- Maximum, Max = 49
- Range, R = 32
Thus the answer to your problem is, D. The range is the best measure of variability, and it equals 32.