Construction of linear regression equation.
Wildlife scientists have measured the lengths of the heads and the lengths of complete bodies of several crocodiles of two different species. In a summary of the regression analysis given below, the dependent variable for each species is the length of the body.
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Species I
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Species II
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R-squared
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96.8%
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97.3%
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Intercept
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-68.3793 cm
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-21.2246 cm
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Head length coefficient
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7.40004
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7.71626
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Do the following.
Do the association between the sizes of the heads and bodies of the two species appear to be strong? Describe. Hint: Use the values of the correlation coefficient and its meaning in your explanation.
Write the equation of the regression line for each of the species.
The crocodile skeleton found had a head length of 62 cm and a body length of 380 cm. Which species do you think it was? give details why.