Manuel measured the height (x) of a sample of ten students to the nearest centimeter. There were 50 grade 6 students. Manuel gets his sample from selecting every fifth student in the class list. Manuel started his selection from the top of the list. (a) (i) State the sampling method above. (ii) [1] Explain two advantages of the sampling method above [2] Manuel also measures the distance (y) each student can throw a baseball in meter. 130 131 132 141 145 145 149 151 154 155 40 41 53 37 46 55 60 60 61 65 (b) Write down the correlation of the data above. 14 (ii) Describe the correlation. (C) (1) Write down the regression line for the data above. [2] (ii) Interpret the coefficient of x in the context of this task. [1] (iil) Comment on how well the linear model fit this set of data. Give your reason. [2] (d) Estimate the height of a student in the class who throws a baseball to 90m. [3] (e) Comment on the validity of your result in (d) above. Give a reason for your answer. [2]