Q 1986201177.     The sum and sum of the squares corresponding
to length `x` in `(cm)` and weighty (in gm) of `50`
plant products are given below ;

` sum_(i = 1)^(50) x_i = 212 , sum_(i = 1)^(50) x_i^2 = 902.8 , sum_(i = 1)^(50) y_i = 261, `
` sum_(i = 1)^(50) y_i^2 = 1457.6`.
Which is more varying, the length or weight?

NCERT Chapter Solution 15.3/05
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