Question

ad as 18. Find the correct mean of the observations.
8. The mean of five numbers is 27. If one number is excluded, their mean is 25. Find the
excluded observation.with photo​

Answer 1

Step-by-step explanation:

Find the sum of 5 numbers:

Mean of 5 numbers = 27

Sum of 5 numbers = 27 x 5 = 135

Find the sum of the 4 numbers:

Mean of the 4 numbers = 25

Sum of the 4 numbers = 4 x 25 = 100

Find the excluded observation:

135 - 100 = 35

Answer: The excluded observation is 35

Answer 2

Answer:

Mean of 5 numbers = 27

sum of 5 numbers = 27×5 = 135

when one number is excluded,

Mean of 4 numbers = 25

sum of 4 numbers = 4×25 = 100

therefore, excluded number = 135-100 = 35

Step-by-step explanation:

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