(50 student sample) Owns a Cell Phone Owns an MP3 Player 27 What do the values in this Venn Diagram...
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13 6 (50 student sample) Owns a Cell Phone Owns an MP3 Player 27 What do the values in this Venn Diagram represent? 3 students______________ Only own a Cell Phone
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Transcript of (50 student sample) Owns a Cell Phone Owns an MP3 Player 27 What do the values in this Venn Diagram...
13 6
(50 student sample)
Owns aCell Phone
Owns an MP3 Player
27
What do the values in this Venn Diagram represent?
13 students______________Only own a Cell Phone
13 6
(50 student sample)
Owns aCell Phone
Owns an MP3 Player
27
What do the values in this Venn Diagram represent?
6 students______________Own only an MP3 Player
13 6
(50 student sample)
Owns aCell Phone
Owns an MP3 Player
27
What do the values in this Venn Diagram represent?
27 students______________ Own Both
13 6
(50 student sample)
Owns aCell Phone
Owns an MP3 Player
27 13+27+6=46
What do the values in this Venn Diagram represent?
Why don’t the numbers add up to 50?
50-46 = 44 students
have neither.
Cell Phon
e
No Cell Phone
Total
MP3 Player 27 6
No MP3 Player 13
Total 50
13 627
Cell Phone MP3 Player
50 students surveyed
How can I use a Venn Diagram to create a two way table?
The relationship between a Venn diagram and a two way table
Cell Phon
e
No Cell Phone
Total
MP3 Player 27 6
27+6=33
No MP3 Player 13
Total 50
13 627
Cell Phone MP3 Player
50 students surveyed
The relationship between a Venn diagram and a two way table
Cell Phon
e
No Cell
PhoneTotal
MP3 Player 27 6 33
No MP3 Player 13 50-33
=17Total 50
13 627
Cell Phone MP3 Player
50 students surveyed
The relationship between a Venn diagram and a two way table
Cell Phon
e
No Cell Phone
Total
MP3 Player 27 6 33
No MP3 Player 13
17-13 =4 17
Total 50
13 627
Cell Phone MP3 Player
50 students surveyed
The relationship between a Venn diagram and a two way table
Cell Phon
e
No Cell Phone
Total
MP3 Player 27 6 33
No MP3 Player 13
17-13 =4 17
Total 50
13 627
Cell Phone MP3 Player
50 students surveyed
The relationship between a Venn diagram and a two way table
Cell Phone
No Cell Phone
Total
MP3 Player 27 6 33
No MP3 Player 13 4 17
Total 27+13=40
6+4 =10 50
13 627
Cell Phone MP3 Player
50 students surveyed
The relationship between a Venn diagram and a two way table
Cell Phon
e
No Cell Phone
Total
MP3 Player 27 6 33
No MP3 Player 13 4 17
Total 40 10 50
13 627
Cell Phone MP3 Player
50 students surveyed
Let’s ReviewGuided Practice
Rewrite this Venn diagram as a two way table.
3 1119
Chores
40 students surveyed
Allowance
Chores
No Chores
Allowance No Allowance
TOTAL
TOTAL
193 11
40
22187
1030
Let’s ReviewQuick Quiz
Rewrite this Venn diagram as a two way table.
Dog No Dog Total
Cat
No Cat
Total
38 2110
Dog
80 students surveyed
Cat
Let’s ReviewQuick Quiz
Rewrite this Venn diagram as a two way table.
Dog No Dog Total
Cat 10 21 31
No Cat 38 11 49
Total 48 32 80
38 2110
Dog
80 students surveyed
Cat
ANSWERS!
Emma has collected information about the cats and dogs that children in her class have as pets.
There are 30 pupils. There are 4 possible responses: Has a cat and a dog. Has a cat but not a dog. Has a dog but not a cat. Does not have a cat or a dog.
How do we translate information into a two way table?
Has a
dog
Does not have a
dog
Total
Has a cat 8 4
Does not have a cat
12
Total
When Emma has entered some of her data, the table looks like this: .
Emma has missed one box, but we know that there are 30 pupils in her class. How do we complete the table?
12
20 3018
106
Has a
dog
Does not have a
dog
Total
Has a cat 8 4 12
Does not have a cat
12 6 18
Total 20 10 30
(a) How many pupils do not have a cat or a dog?
(b) How many pupils have a dog?
(c) How many pupils have a cat?
(d) How many children have at least one of these pets?
62012
24
Cell Phone No Cell Phone Total
MP3 Player
No MP3 Player
Total
• A survey of 8th graders at a middle school found that 73 students own a cell phone and 60 of those students also own an MP3 player.
• There are 7 students that do not own a cell phone, but own an MP3 player.
• Eight students do not own either device.
73
6013
7 678 2115 88
Let’s ReviewGuided Practice
A survey was conducted to see if students get an allowance and if they have to do household chores.
Of the 12 students that receive no allowance, 5 of them have no chores.
There are 17 students who do chores and receive an allowance, while 6 students get an allowance without doing any chores.
allowanceNo allowance
chores No chores
TOTAL
TOTAL
12 5 7
17 6 23
24 11 35
Let’s ReviewQuick Quiz
8 people have no dog. Of those 8, 2 have no cat either. There are 4 people with a cat and a dog, while 3 students have a dog and no cat.
Dog No Dog Total
Cat
No Cat
Total
How many people were surveyed?
Let’s ReviewQuick Quiz
8 people have no dog. Of those 8, 2 have no cat either. There are 4 people with a cat and a dog, while 3 students have a dog and no cat.
Dog No Dog Total
Cat 4 6 10
No Cat 3 2 5
Total 7 8 15
How many people were surveyed?
ANSWERS!
