Interpret Two-Way Tables to Find Associations
Written by Adi Ackerman, Head Teacher
"Interpret Two-Way Tables to Find Associations" is written for 8th Grade (Ages 13-14), and it covers Common Core 8.SP.A.4. A 7th grader who is already steady on data & graphing can use it too, and an older student can use it as a short review.
2 pages in this set
8th grade math worksheet: compare percents in four two way tables, like breakfast and feeling tired, to judge each association. Answer key included. Part of our two-way tables data & graphing collection. Aligned to Common Core standards.
How do I use this worksheet?
Work through the three sheets in order. Ask students to say which total each percent uses before they compute it.
What students will practice
- Students will read counts and totals from two way tables of sample data.
- Students will find conditional percents such as the percent of dog owners who walk daily.
- Students will decide whether each table shows an association and explain why.
Describe Association in Scatter Plots
Construct Scatter Plots From Data Tables
Draw and Judge Lines of Best Fit
Plant Growth Study With Scatter Plots
Interpret Slope and Intercept of a Line of Best Fit
Use a Linear Model to Make Predictions
Write a Linear Model From a Scatter Plot
Build Two-Way Frequency Tables From Surveys
Curriculum Links
Common Core State Standards
Statistics and Probability · 8th Grade
Standard: Understand that patterns of association can also be seen in bivariate categorical data by displaying frequencies and relative frequencies in a two-way table. Construct and interpret a two-way table summarizing data on two categorical variables collected from the same subjects. Use relative frequencies calculated for rows or columns to describe possible association between the two variables.
View all 8.SP.A.4 worksheets →Find this in the curriculum
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FAQ
How do I use this two-way tables worksheet?
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Work through the three sheets in order. Ask students to say which total each percent uses before they compute it.
What does this worksheet teach?
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Compare percents in four two way tables, like breakfast and feeling tired, to judge each association. The directions on the page read: Answer each question. Round percents to the nearest whole percent. An answer key is included.
Can I use this two-way tables worksheet for homeschool or classroom?
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Yes, both. We made it for 8th grade data & graphing, and it works the same at home or at school. At home, a student can work through it alone and then go over it with you, which shows quickly what is solid and what needs another look. In class it works as independent practice, homework or a warm-up, and you can print one copy or a full set.
How do you fill in a two-way table?
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Put one question's choices in the rows and the other's in the columns, fill in the counts you know and use the totals to find the rest. Build Two-Way Frequency Tables From Surveys starts with 60 students who play a sport, an instrument or both.
What is the difference between row and column percents?
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Row percents divide each count by its row total, and column percents divide by its column total. Two-Way Relative Frequency Tables by Row and Column practices one of each.
How do you know if two-way data shows an association?
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Compare the percents for each group. If 20 percent of breakfast eaters but 55 percent of breakfast skippers felt tired, the difference suggests an association. Interpret Two-Way Tables to Find Associations asks students to decide and explain.
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Worksheet Details
| Grade | 8th Grade |
| Subject | Math |
| Topic | Data & Graphing |
| Standard | 8.SP.A.4 |
| Pages | 2 pages |
| Difficulty | Medium |
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Describe Association in Scatter Plots
Construct Scatter Plots From Data Tables
Draw and Judge Lines of Best Fit
Plant Growth Study With Scatter Plots
Interpret Slope and Intercept of a Line of Best Fit
Use a Linear Model to Make Predictions
Write a Linear Model From a Scatter Plot
Build Two-Way Frequency Tables From Surveys