Q. 264.5( 2 Votes )

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The sum and sum of squares corresponding to length x (in cm )and weight y

(in gm ) of 50 plant products are given below: = 212 , = 902.8, = 261, _{ = }1457.6 which is more varying , the length or weight ?

Answer :

n =10

= 212 , = 902.8 , = 261 , _{ = }1457.6

σ^{2}_{length} = = - = 18.056 – 17.9776 = 1.0790

σ^{2}_{weigth} = = - = 29.152 – 27.2484 = 1.9036.

As variance for weights is more than that for length , therefore weights are more varying than length.

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