Sewanhaka High School
Math 8
Per:______________
Name:___________________________________
Mrs. Lidowsky, Principal
Mr. Long, Teacher
Date:________________________
H.W. #69: Ditto
3) Express the following percent as
a fraction in simplest form: 15%
ANS. for 3:
4) Express
1
8
as a percent
ANS. for 4: __
DO-NOW #69: Answer the
following questions:
Topic: Statistics
Main Idea: Two-Way Tables
Aim:
RECALL
Relative frequency is the ratio of the value of a subtotal to
the value of the total. What is the relative frequency of a
student that is on the honor roll and plays a sport to all
students that are on the honor roll?
Is there evidence that students that play sports are
also on the honor roll? Explain.
What is a two-way table?
NOTES
How can I take that same information from the
Venn Diagram and make it into a two-way table?
Felipe surveyed students at his school. He found
that 78 students own a cell phone and 57 of those
students own an MP3 player. There are 13
students that do not own a cell phone, but own an
MP3 player. Nine students do not own either
device. Construct a two-way table summarizing
the data.
From the previous problem, find and interpret the
relative frequencies of students in the survey by
row.
From the previous problem, find and interpret the
relative frequencies of students in the survey by
column.
There are 150 children at summer camp and 71
signed up for swimming. There were a total of 62
children that signed up for canoeing and 28 of
them also signed up for swimming. Construct a
two-way table summarizing the data.
Drill: Answer the following questions. Show work.
Summary: