# PSSA Math Review

Document Sample

```					Graph Math Review

Choosing the appropriate graph
Review – Main Concepts
   There are many ways to represent DATA
 A BAR GRAPH is used to compare numbers
and amounts.
 A CIRCLE GRAPH is used for comparing a
part of the group to another part or to the
whole.
 A LINE GRAPH is used for showing changes
over time.
 A STEM-AND-LEAF plot shows all of the
individual items in a data set.
Example 1
Cecil conducted a school survey about the
lunch preferences of students. Of 100
students, he found that 42% preferred
pizza, 28% preferred hamburgers, 20%
preferred sandwiches, and 10% preferred
hotdogs. Which graph would best display
the data?
Example 1 Strategy
Consider the type of data.

The data include groups that are part of a
whole.
The graph should show how the groups
compare to each other and to the total.
The best choice is a _____________.
   CIRCLE GRAPH
Example 2
The principal of Engel Middle School
collected data on the amount of money
each grade (5th , 6th, 7th, and 8th) raised in
a charity drive. Which choice would best
display this information?
Example 2 – Strategy
Consider the type of data.

The principal wants to compare four
quantities.

The best choice is a __________.
   BAR GRAPH
Example 3
Ms. Yoon wants to organize the math test
scores of all her students. Which type of
display should she use?
Example 3 - Strategy
Consider the type of data.

Ms. Yoon wants to include each data point.

The best choice is a ______________.
   STEM AND LEAF PLOT
Example 4
Maya records the daily high temperature
at her school for two week. Which display
would best show this data?
Example 4 - Strategy
Consider the type of data.

Maya recorded the temperature each day for 2
weeks.

She wants to show ho the temperature changes
over time.

The best choice is a _________________.
•   LINE GRAPH
Sample Test Questions
 Use the following slides to create a fun
 The answers are on the slides following
the question slide.
Question 1
Frank surveys 50 people about their favorite
sports. Which type of display should he use to
present the number of people choosing each
sport to the total number of people surveyed?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf plot
Question 1
   A CIRCLE GRAPH is best used for
comparing a part of the group to another
part of to the whole.
Question 2
A scientist heats a chemical and records
the temperature every minute for an
hour. Which type of display is best suited
to showing these data?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf plot
   A LINE GRAPH is best for showing
changes over time.
Question 3
A museum curator collects data on the
number of paintings in each room of the
museum. Which display is best suited to
showing these data?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf plot
A STEM-and-LEAF PLOT shows all of the
individual items in a data set.
Question 4
Mr. Daly has the results of the last
science test. Which display can he use to
organize all of the scores in his class?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf plot
   A STEM-AND-LEAF PLOT shows all of
the individual items in a data set.
Question 5
Which type of graph should Ted use to show
the results of his survey of 100 students’
favorite television shows if he wants to
compare the precents of the shows chosen?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf graph
   A CIRCLE GRAPH is used best for
comparing a part of the group to another
part or to the whole.
Question 6
A company president wants to track
profits for the first six months of the year.
What type of display should she use?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf graph
   A LINE GRAPH is best for showing
change over time.
Question 7
Liana wants to show what part of her total
allowance she spends on clothes,
entertainment, books ,and other categories.
Which display should she use?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf plot
A CIRCLE GRAPH is best used for
comparing a part of the group to another
part or to the whole.
Question 8
A coach wants organize the scores of his
team’s last 15 games. Which display
should he use?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf plot
   A LINE GRAPH is best used for showing
changes of a time.
Question 9
Samantha wants to chart the daily price
of a share of a corporation’s stock over a
month. Which type of graph should she
use?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf graph
   A LINE GRAPH is best used for showing
changes over time.
Question 10
The personnel director at ABC Company
collects information on how employees travel
to work (bus, car, train, etc.). Which type of
display should she use to present these data?

A.   Bar graph
B.   Circle graph
C.   Line graph
D.   Stem-and-leaf plot
   A BAR GRAPH is usually used to compare
numbers or amounts.
Open Ended Question
This data represents the number of hours that five
students studied for a final exam.

Kerry: 6 hours              Lisa: 4 hours
Nina: 5 hours               Olga: 2 hours
Monica: 3 hours

A.   What type of graph would best display the data?
B.   Use what you know about choosing a graph to explain