Answer:
4
Step-by-step explanation:
d - 9 = -5
Add 9 to -5, and you will get 4.
4 - 9 = -5
The mean reflects the best measure of the center
12, 13, 13, 14, 21, 22, 23
Median: 14
Mean: 16.86
Answer:6>5x6n-1 or 6>5x6+n-1