Common Core: 8th Grade Math : Use Data to Construct and Interpret a Two-Way Table: CCSS.Math.Content.8.SP.A.4
Study concepts, example questions & explanations for Common Core: 8th Grade Math
All Common Core: 8th Grade Math Resources
Example Questions
Example Question #51 : Statistics & Probability
A middle school teacher conducted a survey of the 
To help answer this question, we can construct a two-way table and fill in our known quantities from the question.
The columns of the table will represent the students who are athletes or are not athletes and the rows will contain the students who drink soda or do not drink soda. The first bit of information that we were given from the question was that 
Our question asked how many students don't drink soda. We add up the numbers in the "doesn't drink soda" row to get the total, but first we need to fill in a gap in our table, students who were athletes, but don't drink soda. We can take the total number of students who are athletes, 
This means that 
Now, we add up the numbers in the "doesn't drink soda" row to get the total:
This means that 
Example Question #1 : Completing Incomplete Tables
A middle school teacher conducted a survey of the 
To help answer this question, we can construct a two-way table and fill in our known quantities from the question.
The columns of the table will represent the students who are athletes or are not athletes and the rows will contain the students who drink soda or do not drink soda. The first bit of information that we were given from the question was that 
Our question asked how many students were not athletes. We add up the numbers in the "not an athlete" column to get the total:
This means that 
All Common Core: 8th Grade Math Resources
