Big Ideas Chapter 8 Review

Front

Anika and Benjamin survey every fourth student entering the school to find out how many support extra funding for the history club. Is their sample biased?

Back

Yes, the sample is biased.

Front

Is the conclusion that 60% of students have visited a theater valid based on a sample of 35 students, where 21 have visited and 14 have not?

Back

No, the conclusion is not valid.

Front

Estimate the number of rock music fans in the school based on the survey results of Ava, Daniel, and Aria, who each surveyed 20 students out of 400 total.

Back

200 students

Front

Arjun, Daniel, and Aria are on a quest to find the magical center and variation of their treasure estimates. How can they describe these mystical numbers?

Back

All of the above

Front

Express the difference in the measures of center as a multiple of the measure of variation for two dot plots.

Back

2 times

Front

Describe the distribution of viewer ages for each show like a TV show detective.

Back

The distribution of viewer ages for each show is skewed towards younger viewers.

Front

Best measures of center and variation for analyzing ages of viewers for two TV shows?

Back

Mean and Standard Deviation

Front

Age comparison between viewers of Show A and Show B?

Back

There is no information about the ages of viewers.

Front

Liam and Zoe want to find the average weight of a potato from Idaho. Should they survey the entire potato population or just a sample?

Back

Survey just a sample

Front

In a thrilling bike race at school, 60% of the students are proud bike owners. In a sample group of students, the ratio of those who own a bike to those who don't is 6:10. Does this sample group, featuring Ethan, Rohan, and Liam, accurately reflect the school's bike ownership percentage?

Back

No, the sample does not closely estimate the percentage.