Transcript
Page 1: How do you organize data of students with cell phones that also have MP3 players?

How do you organize data of students with cell phones

that also have MP3 players?

Page 2: How do you organize data of students with cell phones that also have MP3 players?

In this lesson you will learn how to construct a two way

table by collecting and organizing data from a verbal

description.

Page 3: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewLet’s Review

A two-way table shows data that pertain to two different categories.

Cell Phone

No Cell Phone Total

MP3 Player

Have cell phone and mp3 player

Have mp3 player only

Total with MP3 player

No MP3 Player

Have cell phone, but no

mp3 player

Have no cell phone or mp3

player

Total with no MP3 player

Total Total with cell phone

Total with no cell phone

Total Sampled

Page 4: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewA Common Mistake

27

Cell Phone

No Cell Phone Total

MP3 Player 27 6 27+6 =33

No MP3 Player 13 4 13+4 = 17

Total27+13=40 6+4=10 33+17=

40+10=50

Page 5: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewCore Lesson

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 9 students that do not own a cell phone, but own an MP3 player. Eight students do not own

either device

Page 6: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewCore Lesson

Cell Phone

No Cell Phone Total

MP3 Player 60 9 60+9=69

No MP3 Player 8

Total 73

Page 7: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewCore Lesson

Cell Phone

No Cell Phone Total

MP3 Player 60 9 69

No MP3 Player

73-60 =13 8

Total 73

Page 8: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewCore Lesson

Cell Phone

No Cell Phone Total

MP3 Player 60 9 69

No MP3 Player

13 8 13+8=21

Total 73

Page 9: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewCore Lesson

Cell Phone

No Cell Phone Total

MP3 Player 60 9 69

No MP3 Player

13 8 21

Total 73 9+8=17

Page 10: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewCore Lesson

Cell Phone

No Cell Phone Total

MP3 Player 60 9 69

No MP3 Player

13 8 21

Total 73 1769+21= 73+17=

90

Page 11: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewCore Lesson

Cell Phone

No Cell Phone Total

MP3 Player 60 9 69

No MP3 Player

13 8 21

Total 73 17 90

Page 12: How do you organize data of students with cell phones that also have MP3 players?

In this lesson you have learned to how construct a two way

table by collecting and organizing data from a verbal

description.

Page 13: How do you organize data of students with cell phones that also have MP3 players?

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. Construct a two way table to display this data.

Page 14: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewExtension Activities

Observe the students in your class and create a two way table that displays the combinations on hair color and eye color. The hair color categories are black, brown, red, and blond. The eye color categories are brown, blue, hazel, and green. Please note that this table will be bigger than ones in the lesson.

Page 15: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewExtension Activities

Make a survey that collects two pieces of categorical data. Ask 10 people and record your data. Use the data to construct a two way table.

(Some possible topics: boys/girls who study more/less than 1 hour a night; 7th graders/8th graers who dress up/ do not dress up for Halloween)

Page 16: How do you organize data of students with cell phones that also have MP3 players?

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?

Page 17: How do you organize data of students with cell phones that also have MP3 players?

Let’s ReviewQuick Quiz

25 students were surveyed. 14 students do not participate in sports and 7 do not take a

foreign language. 6 student take foreign language and play sports.

F.L. No F.L. Total

Sport

No Sport

Total

How many students take a foreign language and play no sports?


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