Answer:
2
i think
Step-by-step explanation:
Answer:
1: male + female
30
2: 140 + 25x
550
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
Solution: We are given below data:

Now to find the mean deviation, we use the below formula:

Where:
represents the summation
X, represents the observation.
represents the mean
N represents the number of observation.


Therefore, the mean deviation is:

= 4