Chapter 24.4, Problem 44AQP

Summary Introduction

To determine:

The effect of increased wing length in Drosophila melanogaster on the head width if these variables have a correlation of -0.86.

Introduction:

The correlation coefficient is denoted by the symbol “r”. It can be calculated by dividing covariance of two variables by the product of their standard deviation. Mathematically, it can be expressed as follows:

$r=\frac{{\mathrm{cov}}_{xy}}{s_x{s}_y}$

Here, r is the correlation of two variables.

x and y are the variables.

cov_xy refers to the covariance of x and y variables.

S_xs_y is the product of standard deviations of x and y.