Page 250 - NUMINO TG_6A
P. 250
16Everything Is Out of 100 Unit
Have students practice making band graphs using the given data. 1. Have students make a band graph using
data in the table and following the steps.
1 . Make a band graph using the table. When calculating percentages, why do
you divide the individual item by the
The table shows what students in Ricky’s class want to do in the future. whole? This allows you to see what part of
the whole the statistic makes up, or what
Favorite Jobs percent it is.
Why do you multiply by 100? This places
Job Doctor Athlete Teacher Actor Total the quotient in an easy-to-understand
10 5 50 percentage value.
Number of 20 15
Students
a. Find the percent of votes each job received. Complete the table.
Favorite Jobs
Job Doctor Athlete Teacher Actor Total
100
Percent 10 100 = 20 20 100 = 40 15 100 = 30 5 100 = 10
(%) 50 50 50 50
b. Make a band graph using the table above.
Favorite Jobs
0 10 20 30 40 50 60 70 80 90 100(%)
Doctor Athlete Teacher Actor
20% 40% 30% 10%
16. Everything Is Out of 100 141
How to simplify students’ construction of a band graph:
Step 1: Construct each part individually.
Step 2: Double check the percentage table before creating the graph to be sure that a final sum of 100 is
reached after adding each value.
Step 3: Don’t attempt to break up the construction of the graph. Build it exactly as the table is built to ensure
correct order and proportion.
6A Unit 16 233
Have students practice making band graphs using the given data. 1. Have students make a band graph using
data in the table and following the steps.
1 . Make a band graph using the table. When calculating percentages, why do
you divide the individual item by the
The table shows what students in Ricky’s class want to do in the future. whole? This allows you to see what part of
the whole the statistic makes up, or what
Favorite Jobs percent it is.
Why do you multiply by 100? This places
Job Doctor Athlete Teacher Actor Total the quotient in an easy-to-understand
10 5 50 percentage value.
Number of 20 15
Students
a. Find the percent of votes each job received. Complete the table.
Favorite Jobs
Job Doctor Athlete Teacher Actor Total
100
Percent 10 100 = 20 20 100 = 40 15 100 = 30 5 100 = 10
(%) 50 50 50 50
b. Make a band graph using the table above.
Favorite Jobs
0 10 20 30 40 50 60 70 80 90 100(%)
Doctor Athlete Teacher Actor
20% 40% 30% 10%
16. Everything Is Out of 100 141
How to simplify students’ construction of a band graph:
Step 1: Construct each part individually.
Step 2: Double check the percentage table before creating the graph to be sure that a final sum of 100 is
reached after adding each value.
Step 3: Don’t attempt to break up the construction of the graph. Build it exactly as the table is built to ensure
correct order and proportion.
6A Unit 16 233
