Learning objectives

Draw and interpret scatter diagrams for bivariate data, describe the direction and strength of linear correlation, and draw a line of best fit by eye through the mean point

Calculate and interpret Pearson's product-moment correlation coefficient r using technology, and explain why correlation does not imply causation

Find the equation of the regression line of y on x using technology, interpret the meaning of its gradient and intercept in context, and use it for interpolation, commenting on the reliability of extrapolation

Find the equation of the regression line of x on y, and decide which regression line is appropriate for a given prediction

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