## Stem and Leaf Graphs and Tree Diagrams Test

Unit Test #50

Select your answers to the following 10 questions from the pop-up menus in the right hand column. Clicking the "Begin Test Again" button will clear all the answers.

Q1:

Using the graph above, which shows the areas of some of a countiry's lakes, what is the area of thesmallest lake?

A. 3 sq. km
B. 32 sq. km
C. 23 sq. km
D. 8 sq. km

Q2:

Using the stem and leaf graph for the areas of the country's lakes shown above, what is the biggestarea for a lake? A. 80 sq. km
B. 88 sq. km
C. 8 sq. km
D. 87 sq. km

Q3:

Using the stem and leaf graph for the areas of the country's lakes shown above, how many lakes are shown on the graph? A. 80
B. 23
C. 7
D. 13

Q4:

Using the stem and leaf graph for the areas of lakes shown above, what is the MEDIAN area for a lake? A. 47 sq. km
B. 50 sq. km
C. 39 sq. km
D. 74 sq. km

Q5:

The tree diagram below shows the possible outcomes of throwing two coins one after another.

 First coin second coin

How many different combinations of outcomes are there?

A.1
B .2
C. 3
D. 4

Q6:

What would the probability be of getting two heads from the tree diagram above?

A. 0
B. 0.25
C. 0.5
D. 1.0

Q7:

 The stem and leaf graph shows the test results of a class of students. How many students are there in the class?
A. 9
B. 7
C. 27
D. 20

Q8:

What was the highest mark scored in the test above? A. 39
B. 83
C. 93
D. 98

Q9:

Which mark was the fourth highest in the class?

A. 71
B. 64
C. 72
D. 76

Q10:

Which mark was the lowest in the test? A. 83
B. 39
C. 8
D. 38