The following table represents the data collected for tree volume (in cm³ ) and diameter-at- breast height (in cm) for sugar maple trees. Tree volume can be predicted by using Dbh. 197 175 | Tree...

Extracted text: The following table represents the data collected for tree volume (in cm³ ) and diameter-at- breast height (in cm) for sugar maple trees. Tree volume can be predicted by using Dbh. 197 175 | Tree volume (cm ³ 159 Dbh (cm) 163 159 188 170 22.0 25.2 19.8 30.2 22.8 25.8 26.4 The summaries of the data are as follows: Σχ-172.2 ΣΥ- 1211 ΣΧΥ-29995.6 Σχ4305.56 ΣΥ= 210809 (i) Calculate the rank correlation coefficient and comment on your finding. (ii) Find the least squares regression line of Y = a + bX. Hence interpret the value of the regression coefficient "b". Estimate the tree volume when the dbh is 50 cm. Comment on the reliability of the estimate. (iii)