SP.2 Review

Front

What is the percentage of students who prefer roller coasters if 70% of 5,000 students select it as their favorite ride?

Back

3,500 students

Front

How do you estimate a population using the capture-recapture method?

Back

If 36 lizards are marked and later 200 are caught with 16 marked, the estimated population is calculated as (200 * 36) / 16 = 450.

Front

If 4 out of 10 seventh graders like to play paper football, how many out of 800 students like it?

Back

320 students

Front

What is the probability that a randomly chosen seventh grader prefers spring sports if 92 students prefer spring out of 200 surveyed?

Back

46% (92/200 = 0.46 or 46%)

Front

If Jeanette surveys 100 students and finds that 31% prefer soccer, how many students at her school of 1,500 could be expected to choose soccer?

Back

465 students (0.31 * 1500 = 465)

Front

What is the formula to calculate the percentage of a part compared to a whole?

Back

(Part/Whole) * 100 = Percentage

Front

How do you convert a fraction to a percentage?

Back

Multiply the fraction by 100.

Front

What is the total number of students surveyed if 200 seventh graders were asked about their sports preference?

Back

200 students

Front

If 70% of students prefer a certain ride, what fraction represents this percentage?

Back

7/10

Front

What is the expected number of students who prefer a certain sport if 25% of a sample of 200 prefer it?

Back

50 students (0.25 * 200 = 50)