Question

find the mean of 6, 7,18, 9, 10,16,24, 19, 11 and 25 .Also find the resulting mean if each observation of the given above is increased by 3.​

Answer 1

Answer:

14.5

Step-by-step explanation:

6 + 7 + 18 + 9 + 10 + 16 + 24 + 19 + 11 +25 = 145

it's mean = Sum ÷ no. of terms = 145÷10 = 14.5

when each observation above is increased by 3

145 + 3×10 = 145 + 30 = 175

Therefore the resulting mea is 175.

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Answer 2

Answer:

Original mean = 14.5

Mean after addition of 3 in each term = 17.5

Step-by-step explanation:

Original mean = (6 + 7 + 18+ 9+ 10 + 16 + 24 + 19 + 11 + 25)/10 = 145/10

Mean after addition of 3 in each term = (9 + 10 + 21 + 12 + 13 + 19+ 27 + 22 + 14 + 28)/ 10

=> 175/10

Thanks for A2A