Question

Hello ..


A maths question of Statistics...

The mean of 5 numbers is 25. Find the new mean, if each number is
i) multiplied by 5
ii) divided by 5

I will mark the best explanation as brainliest...

Answer 1

HEY BUDDY !!!

HERE'S THE ANSWER...!!!

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▶️ Let those 5 value be a , b , c , d and e

⏺️ Let M1 be mean one ( original )

=> M1 = ( a + b + c + d + e ) / 5 = 25

✔️ If 5 is multiplied to each value new mean ( M2 ) will be

=> M2 = 5 × ( a + b + c + d + e ) / 5 = 25

=> M2 = ( a + b + c + d + e ) / 5 = 25 / 5

=> M2 = ( a + b + c + d + e ) / 5 = 5

⏺️[ M2 will be 5 ]


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♠️ Now dividing each term by 5 , new mean ( M2 ) will be

=> M2 = 1 / 5 × ( a + b + c + d + e ) / 5 = 25

=> M2 = ( a + b + c + d + e ) / 5 = 25 × 5

=> M2 = ( a + b + c + d + e ) / 5 = 125

⏺️ [ M2 will be 125 ]


HOPE HELPED !!!


JAI HIND !!

:-)