Question

If mean of 5 observations is 20 and four observations are 7,23,16, and 35 then find fifth observation. *

20

22

19

25

​

Answer 1

Answer:

Option b is correct - 22 is the answer

Answer 2

Answer:

given :mean of 5 observations = 20

and 4 observeration are 7,23,16 and 35

find :fifth observation

let ,the fifth observation be x

Step-by-step explanation:

we know that

mean = sum of all observations/ total number of observation

mean =7+ 23+ 16+ 35+x /5

20 = 81+x /5

100 =81+x

x=100-81

x=19

hence the fifth observation be 19