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Which of the following would affect the reliability of a forecast made using linear regression? (i) The volume of data on which the regression line is based. (ii) The assumption that the regression line applies outside the range of independent variable values used to establish the line in the rst place. (iii) The assumption that there is a linear relationship between the two variables. (iv) The coefcient of correlation. (ii) and (iv) only 0 (i) and (ii) only 0 (i). (ii), (iii) and (iv) o (i), (ii) and (iii) only