The variance of the numbers 8 ,21 ,34 ,47 , … ,320 is

Question

Accepted Answer

Correct answer: 8788. (8788) 8+ (n-1 )13=320 13n=325 n=25 no. of terms =25 mean = x_in= 8+21+ …+32025= 252 (8+320 )25 variance ^2= x_i^2n- ( mean )^2 = 8^2+21^2+ … .+320^213- (164 )^2 =8788

$The variance of the numbers 8, 21, 34, 47, \dots, 320 is$

Solution

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