1. The Stem and Leaf output that corresponds to a set of test scores is as follows:

Stem-and-leaf of C1N = ?

Leaf Unit = 0.1

62133788

153114566669

(x)40024456677788

1150699

76338

y7247

181

i. How many data points form this set?

ii. What is the value of x?

iii. What is the value of y?

iv. What is the lowest score

v. What is the highest score?

vi.List the first 5 class intervals for the stem-and-leaf.

2. Copy and Complete the Table below

TIME

FREQUENCY

CLASS BOUNDARIES

WIDTH

MIDPOINT

CUMULATIVE FREQUENCY

RELATIVE FREQUENCY

CUMULATIVE RELATIVE FREQUENCY

1-10

6

11-15

14

16-35

20

36-40

10

3. Answer the questions below based on the histogram which shows the heights of hibiscus plants in inches.

a)How many plants have heights between 10 and 25 inches?

b) How many plants have heights more than 15 inches?

c) What percentage of plants have heights less than 20 inches?