Question

mean of 50 observations is 38. if two observations 45 and 55 are deleted, then the mean of remaining observations is _____​

Answer 1

Answer:

37.5

Step-by-step explanation:

Sum of all the 50 observations will be = 50 × 38 = 1900.

If 45 and 55 are subtracted from it, then the sum will be = 1900 - (45 + 55) = 1900 - 100 = 1800.

Two terms are removed from 50 observations. Remaining observations = 50 - 2 = 48

Mean = 1800 ÷ 48

= 37.5