PSSA Math Review

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PSSA Math Review

• Lesson 32 Choosing a Graph

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Standard

• E.1.1.1
• Choose and/or explain the correct representation
  graph for a set of data.

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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.

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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?

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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 _____________.

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Example 1 - Answer

• CIRCLE GRAPH

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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?

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Example 2 Strategy

• Consider the type of data.
• The principal wants to compare four quantities.
• The best choice is a __________.

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Example 2 - Answer

• BAR GRAPH

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Example 3

• Ms. Yoon wants to organize the math test scores
  of all her students. Which type of display should
  she use?

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Example 3 - Strategy

• Consider the type of data.
• Ms. Yoon wants to include each data point.
• The best choice is a ______________.

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Example 3 - Answer

• STEM AND LEAF PLOT

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Example 4

• Maya records the daily high temperature at her
  school for two week. Which display would best
  show this data?

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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 _________________.

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Example 4 - Answer

• LINE GRAPH

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Sample Test Questions

• Use the following slides to create a fun review
  game for your students.
• The answers are on the slides following the
  question slide.

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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?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf plot

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Question 1

• A CIRCLE GRAPH is best used for comparing a part
  of the group to another part of to the whole.

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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?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf plot

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Question 2 - Answer

• A LINE GRAPH is best for showing changes over
  time.

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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?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf plot

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Question 3 - Answer

• A STEM-and-LEAF PLOT shows all of the individual
  items in a data set.

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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?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf plot

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Question 4 - Answer

• A STEM-AND-LEAF PLOT shows all of the individual
  items in a data set.

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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?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf graph

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Question 5 - Answer

• A CIRCLE GRAPH is used best for comparing a part
  of the group to another part or to the whole.

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Question 6

• A company president wants to track profits for
  the first six months of the year. What type of
  display should she use?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf graph

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Question 6 - Answer

• A LINE GRAPH is best for showing change over time.

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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?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf plot

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Question 7 - Answer

• A CIRCLE GRAPH is best used for comparing a part
  of the group to another part or to the whole.

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Question 8

• A coach wants organize the scores of his teams
  last 15 games. Which display should he use?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf plot

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Question 8 - Answer

• A LINE GRAPH is best used for showing changes of
  a time.

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Question 9

• Samantha wants to chart the daily price of a
  share of a corporations stock over a month.
  Which type of graph should she use?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf graph

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Question 9 - Answer

• A LINE GRAPH is best used for showing changes
  over time.

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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?
• Bar graph
• Circle graph
• Line graph
• Stem-and-leaf plot

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Question 10 Answer

• A BAR GRAPH is usually used to compare numbers or
  amounts.

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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
• What type of graph would best display the data?
• Use what you know about choosing a graph to
  explain why your answer is correct. Use words
  and/or numbers in your explanation.