Question

Question 5

The data below represent the weights of the bodies and brains of 15 species. Use a TI-83, TI-83 plus, or TI-84 calculator to find the equation of the regression line, using body weight as the independent variable and brain weight as the dependent variable. Round the slope and intercept to five decimal places.

Body Weight   Brain Weight
10   0.07
24   0.04
50   0.42
70   0.93
73   1.35
120   0.14
170   0.26
187   0.24
320   0.50
400   1.50
450   0.50
550   0.76
700   0.44
800   0.93
950   0.53

Provide your answer below:

y =( )x +( )

Answer 1

Using TI 84,

y = 0.00035 x + 0.46145