how do you organize data of students with cell phones that also have mp3 players?
DESCRIPTION
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. A two-way table shows data that pertain to two different categories. 27. - PowerPoint PPT PresentationTRANSCRIPT
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.
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
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
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
Let’s ReviewCore Lesson
Cell Phone
No Cell Phone Total
MP3 Player 60 9 60+9=69
No MP3 Player 8
Total 73
Let’s ReviewCore Lesson
Cell Phone
No Cell Phone Total
MP3 Player 60 9 69
No MP3 Player
73-60 =13 8
Total 73
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
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
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
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
In this lesson you have learned to how construct a two way
table by collecting and organizing data from a verbal
description.
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.
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.
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)
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
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?