The mean of 30 numbers is 18. Whatwill be the new mean, if each observ

1.	The mean of 30 numbers is 18. Whatwill be the new mean, if each observationis increased by 2WAUW
Answer» Answer: 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

The mean of 30 numbers is 18. Whatwill be the new mean, if each observationis increased by 2WAUW

Answer»

Answer:

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 =

540

=27

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The mean of 30 numbers is 18. Whatwill be the new mean, if each observationis increased by 2WAUW​

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The mean of 30 numbers is 18. Whatwill be the new mean, if each observationis increased by 2WAUW