Question

2. The average age of a group of 7 athletes is 22 years. An athlete whose age is 36 years joins the
group. Will the average age of the group increase or decrease? Find out by how much?​

Answer 1

Step-by-step explanation:

average age =22

therefore we have to substrate 22 from 36

36-22=14

there are 7+1 athletes

14 should be equally distributed in 8 athletes

average age increases by 14/8

Answer 2

Answer:

24

Step-by-step explanation:

Mean=Sum of observations/No of observations

22=Sum of observations/7

22*7=Sum of observations

154=Sum of observations

Mean=22+22+22+22+22+22+154

Mean=168+154

Mean=14

Now average age=168/7

=24age