the mean of 30 number is 18. what will be the new mean, if each observation is increased by 2
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Answer:
27
Step-by-step explanation:
The mean of 20 observation is 25
∴ Sum of 20 observations =20×25=500
⇒ New sum of 20 observations after increasing each observation by 2 =(2×20)+500=40+500=540
⇒ Required mean =
20
540
=27
I hope it helps u ✌️✌️❣❣☺️........
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