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S u m space o f space 10 space n u m b e r s space i s space 80 space a n d space s u m space o f space t h e i r space s q u a r e s space i s space 650. F i n d space t h e space c o e f f i c i e n t space o f space v a r i a t i o n

Please provide solution to this question

Asked by Topperlearning User 19th November 2016, 3:30 AM
Answered by Expert

x with bar on top equals 80 over 10 equals 8
sigma equals square root of 650 over 10 minus 8 squared end root
equals square root of 65 minus 64 end root equals 1
C. V equals fraction numerator sigma over denominator x with bar on top end fraction equals 1 over 8 equals 0.125 space o r space 12.5 percent sign

Answered by Expert 19th November 2016, 5:30 AM
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