Tyler is planning to buy a new car. He intends to trade in his existing car, a 2002 Chrysler Sebring in good condition. Using the table below, estimate how much Tyler’s car is worth. Chrysler Cars in Good Condition Model/Year 2000 2001 2002 2003 2004 Pacifica $2,194 $2,288 $2,605 $2,690 $2,814 Concorde $1,842 $1,998 $2,180 $2,781 $2,925 Sebring $2,920 $3,075 $3,260 $3,551 $3,912 300M $2,770 $2,934 $3,095 $3,188 $3,676 a. $3,260 b. $2,920 c. $2,605 d. $3,188

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