Certain kinds of tumors tend to recur. The following data represent the lengths of time, in months, for a tumor to recur after chemotherapy (Reference: D. P. Byar, Journal of Urology, Vol. 10, pp. 556-561). 21 22 54 46 25 49 50 1 59 39 43 39 5 9 38 18 14 45 54 59 46 50 29 12 19 36 38 40 43 41 10 50 41 25 19 (a) Make a dotplot for the data above regarding the recurrence of tumors after chemotherapy. Select the appropriate dotplot below.

The attached image shows dot plot of the data.

Step-by-step explanation:

Sorting the data of lengths of time for a recurrence of tumor after chemotherapy in ascending order.

1

5

9

10

12

14

18

19

19

21

22

25

25

29

36

38

38

39

39

40

41

41

43

43

45

46

46

49

50

50

50

54

54

59

59

The sorted data then displayed into dot plot. The data is sorted first because it is easier to make dot plot of it. The dot plot represents each data value in the form of dot. The required dot plot shows that data is skewed to left.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50