Working: Answers: (a) ………………………………………………. (b) ......................................................................... (c) ………………………………………………. Consider the following set of data which is plotted on the scatter diagram below. 2 4 7 12 4 8 9 x 2 5 8 12 26 12 14 20 y 7 Write down the coordinates of the mean point (x , ). y [2 marks] (b) Write down the value of , the Pearson’s product-moment correlation r coefficient for this set of data. [2 marks] Draw the regression line for on on the set of axes above. y x [2 marks] Working: Answers: (a) ……………………………………………….
Working: Answers: (a) ………………………………………………. (b) ......................................................................... (c) ………………………………………………. Consider the following set of data which is plotted on the scatter diagram below. x 2 4 7 12 4 8 9 2 y 5 8 12 26 12 14 20 7 Write down the coordinates of the mean point (x , y ). [2 marks] (b) Write down the value of r , the Pearson’s product-moment correlation coefficient for this set of data. [2 marks] Draw the regression line for y on x on the set of axes above. [2 marks] Working: Answers: (a) ……………………………………………….
y12_sl_studies_paper_1_assessment_jun_2013.docx