The sum and the sum of squares of length x (in cm) and weight y (in g)

1.	The sum and the sum of squares of length x (in cm) and weight y (in g) of 50 plant products are given below: ∑50i=1xi=212, ∑50i=1x2i=902.8, ∑50i=1yi=261 and ∑50i=1y2i=1457.6 Which is more variable, the length or weight?
Answer» The sum and the sum of squares of length x (in cm) and weight y (in g) of 50 plant products are given below: $\sum_{i = 1}^{50} x_{i} = 212, \sum_{i = 1}^{50} x_{i}^{2} = 902.8, \sum_{i = 1}^{50} y_{i} = 261$ and $\sum_{i = 1}^{50} y_{i}^{2} = 1457.6$ Which is more variable, the length or weight?

The sum and the sum of squares of length x (in cm) and weight y (in g) of 50 plant products are given below: ∑50i=1xi=212, ∑50i=1x2i=902.8, ∑50i=1yi=261 and ∑50i=1y2i=1457.6 Which is more variable, the length or weight?

Answer»

The sum and the sum of squares of length x (in cm) and weight y (in g) of 50 plant products are given below:

$\sum_{i = 1}^{50} x_{i} = 212, \sum_{i = 1}^{50} x_{i}^{2} = 902.8, \sum_{i = 1}^{50} y_{i} = 261$ and $\sum_{i = 1}^{50} y_{i}^{2} = 1457.6$

Which is more variable, the length or weight?