The mean of 50 numbers is 18. What will be the new mean if each observation is increased by 4?
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7
Answer:
72
Step-by-step explanation:
NUMBER of observation=50
Mean of observations =18
let the sum of observation =x
Mean=x/50=18
If each observation is increased by4,then;
new mean=4(x)/50?
From old mean;we get×=50*18=900
=>4(900)/50=>new mean
=>4(18)=72
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