CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1)...
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Transcript of CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1)...
![Page 1: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/1.jpg)
CONFIDENTIAL 1
Good Afternoon!Today we will be learning about
Double Bar Graphs
Let’s warm up :
1) Judy has made 7 T-shirts. Each day she makes another 4 T-shirts. Harry has made 11
T-shirts and makes another 3 T-shirts everyday. How many T-shirts total will Judy
and Harry have made after six days?
2) Steve has read 5 books. Each week he reads 3 more books. Emily has read 6 books. Each week she 2 more. How many books will each have read when they have read a total
of 41 books?
1) 60 T-shirts
9) Steve 23 books; Emily 18 books
![Page 2: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/2.jpg)
CONFIDENTIAL 2
Let’s review what we did in the last session
Survey: A survey is one way to collect information or data. When you conduct a survey, you ask a question and record
the answers.
The question for one class survey was, “What do you like to eat?”
The answer choices were Chicken nuggets, corn, French fries, salad and tuna
sandwich.
What do you like to eat?
Answer Tally Number
Chicken nuggets 13
Corn 7
French fries 6
salad 0
tuna sandwich 4
The answer choice nuggets was given more often.
![Page 3: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/3.jpg)
CONFIDENTIAL 3
Review
To conduct a survey and organize your data keep in mind the following things.
Choose a topic for your survey to tell what the data shows.
Choose the questions that you will ask.
Show the answers on the table .
Organize the chart by making a tally mark for each answer.
Choose how many answers you will allow each person to give.
Keep track of the number of people you survey.
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CONFIDENTIAL 4
Review
So, in general you should do the following steps :
STEP 1: Write a question that has 3 or 4 possible answers. List the possible answers in a tally chart like the one shown.
STEP 2: Survey 20 people. Allow each person to give only one answer. Make a tally mark for each answer. Then add the tally marks for each answer.
STEP 3: Analyze your data, i.e. how would describe the results of your survey.
Question:
Answer Tally Number
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CONFIDENTIAL 5
ReviewTally: A tally chart is a way to show
the information or data you have collected.
Use the tally chart to answer the questions.How many children are in your family?
Answer Tally Number
1 2
2 13
3 8
4 2
More than 4 0
1) What is the survey question? [How many children are in your family?]
2) Which answer was given most often? Least often?[2 children; More than 4 children]
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CONFIDENTIAL 6
Review
Mike has 4 baseball cards. Each week he gets 2 more cards. Fredrick has 3 baseball cards and
gets 1 more card each week. How many baseball cards will each have when they have a total of 19
baseball cards?Here is the table of information about the problem.
Mike’s cards Fredrick’s cards Total cards
4 3 7
6 4 10
8 5 13
10 6 16
12 7 19
Week1Week2
Week3
Week4
Week4
How many cards each boy had when the total card is 19.
Mike has 4 cards and Fredrick has 3 cards.
![Page 7: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/7.jpg)
CONFIDENTIAL 7
Review
Make a table
Read each sentence and then paraphrase, which says the same thing in a different
way.
Original sentence Paraphrase
Art is twice bob’s age. Art’s age ÷ 2 = Bob’s ageOR, Bob’s age × 2 = Art’s age
Cal is half Dee’s age. Cal’s age × 2 = Dee’s age OR, Dee’s age ÷ 2 = Cal’s age
Each person is 3 inches taller than the next tallest person.
First person’s height + 3’ = Second person’s heightSecond person’s height + 3’ = Third person’s height
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CONFIDENTIAL 8
Together, Herman’s age and his sister’s age equal 27. Herman’s sister’s age is twice
Herman’s age? How old is Herman? How old is his sister?
Herman’s age Sister’s age Total age
1 2 3
2 4 6
3 6 9
4 8 12
5 10 15
6 12 18
7 14 21
8 16 24
9 18 27
Here is the table of information about the problem.
Herman is 9 years old and his sister is 18 years old.
Review
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CONFIDENTIAL 9
Let’s start withDouble Bar Graphs
Bar graphs are one of the many techniques used to present data in a visual form so that the
reader may readily recognize patterns or trends.
In the bar graphs, the objects or categories are listed along the horizontal axis and the associated
numerical value is indicated by the length of a bar above the category. Bar graphs usually present
categorical and numeric variables grouped in class intervals.
The important point to note about bar graphs is their bar length or height—the
greater their length or height, the greater their value.
![Page 10: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/10.jpg)
CONFIDENTIAL 10
A bar graph can be used to display data that can be counted.
There are many characteristics of bar graphs that make them useful. Some of these are that:
They make comparisons between different variables very easy to see.
They clearly show trends in data, meaning that they show how one variable is affected as the other rises or falls.
Given one variable, the value of the other can be easily determined.
![Page 11: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/11.jpg)
CONFIDENTIAL 11
Number of nights below freezing point
November December
January
Seattle, WA 2 7 7
Helena, MT 16 27 29
Table
Look at the table below. It has rows and columns of numbers.
The table shows the number of nights of two cities having temperature below freezing
point.With the help of the data we formulate a bar
graph comparing the two sets of data.
NEXT PAGE
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CONFIDENTIAL 12
Seattle, WAHelena, MT
35302520151050
November December
Number of nights below freezing point
Double Bar Graph
Labels
Title
Key
Interval
January
SeattleHelena
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CONFIDENTIAL 13
Double bar graph
On a vertical bar graph, objects or categories are listed along a horizontal axis and the associated numerical value is indicated by the length of a bar above each
category.
The double (or group) vertical bar graph is an effective means of comparing sets of data
about the same places or items.
This type of vertical bar graph gives two or more pieces of information for each item on
the x-axis instead of just one .
![Page 14: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/14.jpg)
CONFIDENTIAL 14
Susan saw many types of birds at her bird feeder. Mitch also saw many types
of birds at his bird feeder.
SusanMitch
20151050
Num
ber
of
bir
ds Birds at Susan's and Mitch’s feeders
Robin Sparrow Cardinal
By reading the graph, you can see:
Susan saw five more robins than Mitch. Mitch saw five more Sparrow than Susan. Mitch and Susan both saw five cardinals.
Types of birds
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CONFIDENTIAL 15
MikeJen
35302520151050N
um
ber
of
pla
nts
Mike's and Jen’s garden
Carrots Lettuce Beans
Types of plants
Peas
Use the bar graph to answer the questions.
1) How many carrot plants did Mike have in his garden?
2) Did Mike or Jen have more bean plants?
NEXT PAGE1) 5 plants 2) Mike
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CONFIDENTIAL 16
MikeJen
35302520151050N
um
ber
of
pla
nts
Mike's and Jen’s garden
Carrots Lettuce Beans
Types of plants
Peas
Use the bar graph to answer the questions.
3) How many pea plants did Mike and Jen have altogether?
4) All of Jen’s plants are shown on the graph. How many plants does Jen have in her garden altogether?
3) 30 pea plants 4) 60 plants
![Page 17: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/17.jpg)
CONFIDENTIAL 17
A double bar graph can be used to compare two sets of data.
The steps for making and interpreting double bar graph are:
STEP 1: Choose a title and labels for the graph. Then choose colors for the key. The key shows what each bar stands for. Next, choose an interval. The difference between the two numbers on the scale is the interval.
STEP 2: Use the data from the table to make the graph.
STEP 3: Use the completed graph to compare the data.
![Page 18: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/18.jpg)
CONFIDENTIAL 18
The table below shows the rainfall of two towns in three months.
Rainfall of two towns (in cm)
June July August
Seattle, WA 60 85 95
Helena, MT 30 47 60
Use the table to draw a double bar graph.
STEP 1:
Title of the graph : “Rainfall of two towns (in cm)”.
Labels for the graph : “June”, “July” and “August”.
key: “Red” for Seattle and Blue for “Helena”.
Interval : 0 - 15, 15 - 30,...................
![Page 19: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/19.jpg)
CONFIDENTIAL 19
Seattle, WAHelena, MT
STEP 2:
SeattleHelena
1059075604530150
June July
Rainfall of two towns (in cm)
August
Rain
fall
(in
cm
)
Months
Using the data from the table to make the
graph.
![Page 20: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/20.jpg)
CONFIDENTIAL 20
Assessment
Arnold made a chart to show his sales for the two most popular items at his painting studio. The table below shows the sales for each item. Use the table to make a double bar graph. Then use
the graph to answer the questions.
Number of items sold
Item 2002 2003 2004
Portraits 60 70 70
Landscapes 60 65 75
1) What interval did you choose for graph? Explain your choice.
2) In which year were there more landscapes sold than portrait?
1) 10; all of the data is divisible by 10 or 5.
2) 2004.
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CONFIDENTIAL 21
Number of items sold
Item 2002 2003 2004
Portraits 60 70 70
Landscapes 60 65 75
3) Which item did Arnold sell the same number of ii 2003 and 2004?
4) Which item showed a steady increase in sales for each year?
5) What is the total number of both items that Arnold sold for all 3 years?
6) In which year did Arnold sold fewer than 65 landscapes?
7) From the graph, would you expect that Arnold to sell more than or fewer than 75 landscapes in 2005? Explain.
3) Portraits
4) Landscapes.
5) 400.
6) 2002
7) more; there is an increase for each of the 3 years shown.
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CONFIDENTIAL 22
8) Which could you show with a double bar graph?
A) The height of the world’s 7 tallest mountains.
B) The birthdays of all the student’s in a class.
C) The number of centimeters a corn plant and a tomato plant grew each week.
D) The number of inches of rainfall your hometown received each month.
8) C
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CONFIDENTIAL 23
Double Bar Graphs
Bar graphs are one of the many techniques used to present data in a visual form so that the
reader may readily recognize patterns or trends.
In the bar graphs, the objects or categories are listed along the horizontal axis and the associated
numerical value is indicated by the length of a bar above the category. Bar graphs usually present
categorical and numeric variables grouped in class intervals.
The important point to note about bar graphs is their bar length or height—the
greater their length or height, the greater their value.
Very Good!Let's Review
![Page 24: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/24.jpg)
CONFIDENTIAL 24
A bar graph can be used to display data that can be counted.
There are many characteristics of bar graphs that make them useful. Some of these are that:
They make comparisons between different variables very easy to see.
They clearly show trends in data, meaning that they show how one variable is affected as the other rises or falls.
Given one variable, the value of the other can be easily determined.
Review
![Page 25: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/25.jpg)
CONFIDENTIAL 25
Number of nights below freezing point
November December
January
Seattle, WA 2 7 7
Helena, MT 16 27 29
Table
Look at the table below. It has rows and columns of numbers.
The table shows the number of nights of two cities having temperature below freezing
point.With the help of the data we formulate a bar
graph comparing the two sets of data.
NEXT PAGE
Review
![Page 26: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/26.jpg)
CONFIDENTIAL 26
Seattle, WAHelena, MT
35302520151050
November December
Number of nights below freezing point
Double Bar Graph
Labels
Title
Key
Interval
January
SeattleHelena
Review
![Page 27: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/27.jpg)
CONFIDENTIAL 27
Double bar graph
On a vertical bar graph, objects or categories are listed along a horizontal axis and the associated numerical value is indicated by the length of a bar above each
category.
The double (or group) vertical bar graph is an effective means of comparing sets of data
about the same places or items.
This type of vertical bar graph gives two or more pieces of information for each item on
the x-axis instead of just one .
Review
![Page 28: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/28.jpg)
CONFIDENTIAL 28
Susan saw many types of birds at her bird feeder. Mitch also saw many types
of birds at his bird feeder.
SusanMitch
20151050
Num
ber
of
bir
ds Birds at Susan's and Mitch’s feeders
Robin Sparrow Cardinal
By reading the graph, you can see:
Susan saw five more robins than Mitch. Mitch saw five more Sparrow than Susan. Mitch and Susan both saw five cardinals.
Types of birds
![Page 29: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/29.jpg)
CONFIDENTIAL 29
A double bar graph can be used to compare two sets of data.
The steps for making and interpreting double bar graph are:
STEP 1: Choose a title and labels for the graph. Then choose colors for the key. The key shows what each bar stands for. Next, choose an interval. The difference between the two numbers on the scale is the interval.
STEP 2: Use the data from the table to make the graph.
STEP 3: Use the completed graph to compare the data.
Review
![Page 30: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/30.jpg)
CONFIDENTIAL 30
The table below shows the rainfall of two towns in three months.
Rainfall of two towns (in cm)
June July August
Seattle, WA 60 85 95
Helena, MT 30 47 60
Use the table to draw a double bar graph.
STEP 1:
Title of the graph : “Rainfall of two towns (in cm)”.
Labels for the graph : “June”, “July” and “August”.
key: “Red” for Seattle and Blue for “Helena”.
Interval : 0 - 15, 15 - 30,...................
Review
![Page 31: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/31.jpg)
CONFIDENTIAL 31
Seattle, WAHelena, MT
STEP 2:
SeattleHelena
1059075604530150
June July
Rainfall of two towns (in cm)
August
Rain
fall
(in
cm
)
Months
Using the data from the table to make the
graph.
Review
![Page 32: CONFIDENTIAL1 Good Afternoon! Today we will be learning about Double Bar Graphs Let’s warm up : 1) Judy has made 7 T-shirts. Each day she makes another.](https://reader035.fdocuments.net/reader035/viewer/2022062718/56649e595503460f94b53640/html5/thumbnails/32.jpg)
CONFIDENTIAL 32
You have done a nice job.See you in the next session.