Honors: 9.045 Two-way relative frequency tables
Interactive practice questions
This two-way table represents percent frequencies from a survey of students on their favorite science experiment:
| Bacteria Culture Lab | Frog Dissection Lab | DNA Testing Lab | Total | |
|---|---|---|---|---|
| 9th Grade Students | $28%$28% | $41%$41% | $31%$31% | $100%$100% |
| 10th Grade Students | $56%$56% | $3%$3% | $41%$41% | $100%$100% |
| Total | $51%$51% | $9%$9% | $40%$40% | $100%$100% |
True or false: More than $50%$50% of all students favor the bacteria culture lab.
True or false: More than $50%$50% of all ninth graders favor either the bacteria culture lab or frog dissection lab.
True
False
Which of the following statements is true?
More than $20%$20% of all students favor the DNA testing lab.
More than $50%$50% of all students favor the frog dissection lab or the DNA testing lab.
More than $60%$60% of all students favor the bacteria culture lab.
This two-way table gives the number of people who enrolled in two different classes offered at a community center:
This two-way table shows a scientist's data on the diet of two types of squirrels observed in the Rocky Mountains:
This two-way table represents the number of traffic violations in Portland, Oregon during the past three weeks:
| Speeding | Texting While Driving | Total | |
|---|---|---|---|
| Teenage Drivers | $16$16 | $80$80 | $96$96 |
| Adult Drivers | $49$49 | $15$15 | $64$64 |
| Total | $65$65 | $95$95 | $160$160 |