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ICSE Class 9 Answered

The mean of 15 observation is 32.find the resulting mean if each observation is: 1) increased by 3. 2) decreased by 7 3) multiply by 2 4)Divided by 0.5 5) increased by 60% 6) decreased by 20%
Asked by ska2545 | 31 Jul, 2018, 08:06: PM
answered-by-expert Expert Answer
size 16px Mean size 16px space size 16px equals size 16px space fraction numerator size 16px sum size 16px space size 16px of size 16px space size 16px observations over denominator size 16px number size 16px space size 16px of size 16px space size 16px observations end fraction size 16px Sum size 16px space size 16px of size 16px space size 16px 15 size 16px space size 16px observations size 16px space size 16px equals size 16px space size 16px 32 size 16px space size 16px cross times size 16px space size 16px 15 size 16px 1 size 16px right parenthesis size 16px each size 16px space size 16px observation size 16px space size 16px increase size 16px space size 16px by size 16px space size 16px 3 size 16px space size 16px than size 16px space size 16px our size 16px space size 16px sum size 16px space size 16px of size 16px space size 16px observation size 16px space size 16px equals size 16px space size 16px 480 size 16px space size 16px plus size 16px space size 16px 15 size 16px space size 16px cross times size 16px space size 16px 3 size 16px space size 16px equals size 16px space size 16px 480 size 16px space size 16px plus size 16px space size 16px 45 size 16px space size 16px equals size 16px space size 16px 525 size 16px 6 size 16px right parenthesis size 16px each size 16px space size 16px observation size 16px space size 16px is size 16px space size 16px decreased size 16px space size 16px by size 16px space size 16px 20 size 16px percent sign size 16px space size 16px so size 16px space size 16px sum size 16px space size 16px is size 16px space size 16px also size 16px space size 16px decreased size 16px space size 16px by size 16px space size 16px 20 size 16px percent sign size 16px comma size 16px space size 16px so size 16px space size 16px our size 16px space size 16px sum size 16px space size 16px of size 16px space size 16px observation size 16px space size 16px after size 16px space size 16px decreased size 16px space size 16px by size 16px space size 16px 20 size 16px percent sign size 16px space size 16px equals size 16px space size 16px 525 size 16px space size 16px minus size 16px space size 16px 105 size 16px space size 16px equals size 16px space size 16px 420 size 16px So size 16px comma size 16px resulting size 16px space size 16px mean size 16px space size 16px equals size 16px space size 16px 420 over size 16px 15 size 16px space size 16px equals size 16px space size 16px 28
Answered by Yasmeen Khan | 01 Aug, 2018, 10:34: AM

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