Question

4. The following data represent the bounced check fee in dollars for a sample of 23 banks for direct-deposit customers who maintain a S100 balance. 26 28 20 20 21 22 25 25 18 25 15 20 18 20 25 25 22 30 30 30 15 20 29 Place the data into an ordered array. a. b. Set ua stem and-leaf display for these data Stem Leaf Around what value(s), if any, do the bounced check fees seem to be most concentrated? Explain. c.

Answer 1

Answer

(1) First, we need to arrange the data in an ascending order, i.e. from smallest value to largest value.

15, 15, 18, 18, 20, 20, 20, 20, 20, 21, 22, 22, 25, 25, 25, 25, 25, 26, 28, 29, 30, 30, 30

(2) We know that in stem and leaf plot, ones digit is considered as lead and tens digit is considered as stem.

so, we can make one table

Stem	Leaf
1	5,5,8,8
2	0,0,0,0,0,1,2,2,5,5,5,5,5
3	0,0,0

(3) We can see that stem 2 has maximum number of leaves. So, we can say that bounced back fee seems to be concentrated at stem 2.