Question

(d) The two regression coefficcient are 2.7 and
Os and the coefficient of correlation is
0.90 comment.​

Answer 1

The correct data is: The two regression coefficients are -2.7 and -0.3 and the coefficient of correlation is 0.90. What is your comment?

The model is a good fit, as the data can be fitted to the regression line.

• The two regression coefficients are -2.7 and -0.3

• The regression coefficients are negative and the proportion of variations between data variables is high

• The coefficient of correlation is 0.90.

• Coefficient of correlation = √{ two regression coefficients}

• Implies that the correlation between x and y variables is high and positive

• higher the correlation value lesser the regression and data fit the model only if the regression graph is linear.

• r^2 = 0.9^2 = 0.81 indicates smaller differences between the observed data fitted values