f(x) = 0.2x + 78 The linear function represents the average test score in your math class where x is the number of the test taken . The linear function the average test score in your science class , where x is the number of the test taken . g(x) represents g(x) 86 2 84 3 82 Part A : Determine the test average for your math class after completing test 2 ( 2 points ) Part B : Determine the test average for your science class after completing test 2. ( 2 points ) Part C : Which class had a higher average after completing test 42 Show work to support your answer ( 6 points )

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above