I am having so much trouble doing these, if someone could help I would appreciate it.

Construct a percentile graph for the data below. Approximate to the nearest 10th the data value that corresponds to the 75th percentile. Lower bound upper bound Frequency

9.5 15.5 7

15.5 21.5 4

21.5 27.5 5

27.5 33.5 2

33.5 39.5 2

a. 40.5

b. 16.1

c. 23.5

d. 26.3

Find the estimate of the mean for the following grouped frequency distribution.

lower limit upper limit frequency

10 15 7

16 21 4

22 27 5

28 33 2

34 39 2

Examine the following stem and leaf display. What is the median for the data set?

4 2 5 8

5 1 1 2 5 7

6 0 0 1 5 6 6 9

7 0 1 2 4 6 8

8 1 3 5 7

Construct a percentile graph for the data below. Approximate to the nearest 10th the data value that corresponds to the 75th percentile.

lower bound upper bound Frequency

9.5 15.5 7

15.5 21.5 4

21.5 27.5 5

27.5 33.5 2

33.5 39.5 2

a, 40.5

b. 16.1

c. 23.5

d. 26.3

Many, many thanks in advance

Karen