Question

The mean of 5 observation is 25 if one of the obsrvation is excluded the mean becomes 20.The excluded number is

Answer 1

Answer:

hope my answer helps you...........

Answer 2

Answer:

45

Step-by-step explanation:

Find the sum of 5 numbers:

Mean of 5 numbers = 25

Sum of 5 numbers = 25 x 5 = 125

Find the sum of the 4 numbers:

Mean of the 4 numbers = 20

Sum of the 4 numbers = 4 x 20 = 80

Find the excluded observation:

125 - 100 = 45

Answer: The excluded observation is 45