Question

Arithmetic mean of 50 observations is found to be 24 later on checking the data it was observed that two items having value 23 and 30 are taken as 32 and 3 find the arithmetic mean by mkaking necessary conditions

Answer 1

Step-by-step explanation:

arithmetic mean of 50 observation= 24

that is, (a1+a2+........a50) /50=24

therefore,

(a1+a2+........a50) = 24*50= 1200

now, instead of 23&30 value taken are 32&3

corrected sum = 1200-32-3+23+30=1218

corrected mean of 50 observation is = 1218/50=24.36

hope this helps!