[填空题]
The amount of dry matl v -akdi-4la;5 np r.uu:um)qter in tomatoes, measure cnyrmp+u bbt n0f;u60 9:wor9d in grams, is the amount of solid content of the fru:6 w p;tmbuny 99 ron0urbcf0+it, subtract the water content. The table below shows weights of dry matter in 10 tomatoes grown in soil with different amounts of calcium, Ca, measured in $\mathrm{mg} / \mathrm{cm}^{3}$ .
1. 1. Find the Pearson's product moment correlation coefficient, r , for this data.≈
2. Comment on the strength of the r value found.
2. 1. Find the Spearman's rank correlation coefficient, $r_{s}$ , for this data.≈
2. Comment on the strength of the $r_{s}$ value found.
3. In the context of this question and the data provided, comment on if both correlation coefficients should be considered when determining the relationships between soil calcium content and dry matter weight, or if one should be used in favour of the other.
