1. Frequency Tables/ Two way tables

2. Standard: 8.SP.4
I can construct and interpret frequency tables / two way tables

3. Two way table – bivariate data (two variables) that displays count
Two way table – bivariate data (two variables) that displays count. It is used to analyze survey results
Relative frequency = 𝑠𝑢𝑏𝑡𝑜𝑡𝑎𝑙 𝑡𝑜𝑡𝑎𝑙

4. Example
SUV
Sports Car
TOTAL
Male 21 60
Female
156 54

5. SUV
Sports Car
TOTAL
Female 21 39 60
Male
135 15
150
Total
156 54
210

6. What percent of everyone surveyed were males who want a SUV?
Sports Car
TOTAL
Female 21 39 60
Male
135 15
150
Total
156 54
210
What percent of everyone surveyed were males who want a SUV?
What percent of everyone surveyed were females who want a sports car?
3. What percent of everyone surveyed were females?
4. What is the relative frequency of females who chose a SUV?

7. What percent of the males surveyed want a sports car?
What percent of the females surveyed want a SUV?
What percent of those who chose SUV were males?
What percent of those who chose a sports car were females?

8. 18 more females chose sports car than females who chose a SUV?
TOTAL
Female 21 39 60
Male
135 15
150
Total
156 54
210
True of False?
18 more females chose sports car than females who chose a SUV?
More people chose sports car than people who chose a SUV?
More males were surveyed than females?
About 29% of those who were surveyed were women?
About 93% of the males chose a sports car?