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- 1. Multiple Choice_________ is a sample in which each individual or object in the entire population has an equal chance of being selected.SamplePopulationRandom SampleQuartile
- 2. Multiple ChoiceA student surveys mathematics teachers to get their opinion on teaching. What is the sample?All teachers in the world.All teachers within the school.All mathematics teachers in the school.All teachers except mathematics teachers.
- 3. Multiple ChoiceA teacher decides to survey the students in her classes to find out their opinion on the new menu in the cafeteria. Is this biased or unbiased?BiasedUnbiased
- 4. Multiple Choice
a controlled study in which the researcher attempts to understand cause-and-effect relationships by assigning subjects to groups and deciding which treatments each group receives
survey
observational study
experiment
- 5. Multiple Choice
You want to see if students who have a 4.0 grade point average study more than those who do not.
survey
observational study
experiment
- 6. Multiple ChoiceWhich of the following is not a way to choose a random sample of 25?Assign numbers. Use a random number generator to choose 25Put names in a hat, mix them up and choose 25Assemble possible participants in a circle around a person who is blindfolded, spin the person around 3 times and have them point at a person. Do this 25 times.
- 7. Multiple ChoiceFlipping a fair coin in an experiment is a reasonable way to completely randomize in an experiment.TrueFalse
- 8. Multiple Choice
Joe Mama wants to do an observational study comparing height and weight. He also does a study comparing weight and calories consumed daily. He concludes that the more calories you consume, the more you weigh. And people who weigh more are generally taller. Therefore, if you eat more, you will get taller. Why is this incorrect?
Causation from one observational study cannot be extrapolated and applied to another
Correlation does not indicate causation
He is ignoring the lurking variable of age
He did not have a control group
- 9. Multiple Choice
In a certain school, students can choose whether to eat in the school’s cafeteria. A reporter working for the school’s newspaper polled students on their reactions to changes in the menu at the cafeteria. For each student leaving the cafeteria in one 20-minute time period, the reporter used a die to determine whether to stop the student and ask how he or she felt about the new menu. In the reporter’s article it was stated that a random sample of the students showed that 23% of the school’s student population was happy with the new menu. Which of the following statements is true?
Because each student leaving the cafeteria was randomly selected and could choose to answer or not, this is a random sample of the student population, and the 23% is an accurate measurement of the school population’s view of the new menu.
Because students self-selected whether to eat in the cafeteria, the sampling method might be biased and the sample might not be representative of all students in the school.
The survey would have been more effective if the reporter had collected the data in one 10-minute time period rather than in one 20-minute time period.
The survey would have been more effective if students who cared about the food could have called the reporter to tell how they felt about the new menu, so that only students with opinions on the subject would have been surveyed.
Because no treatment was imposed on the students eating in the cafeteria, one cannot make any conclusions about the new menu.
- 10. Multiple Choice
the tendency of a sample or statistic to misrepresent the population
biased
unbiased
- 11. Multiple Choice
a controlled study in which the researcher attempts to understand cause-and-effect relationships by assigning subjects to groups and deciding which treatments each group receives
survey
observational study
experiment
- 12. Multiple Choice
a study in which the researcher attempts to understand cause-and-effect relationships without assigning subjects to groups or deciding which treatments each group receives
survey
observational study
experiment
- 13. Multiple Choice
a questionnaire given to a population or a sample of population
survey
observational study
experiment
- 14. Multiple Choice
You want to find opinions on the best computer game to buy.
survey
observational study
experiment
- 15. Multiple Choice
You want to compare the health of students who walk to school to the health of students who ride the bus
survey
observational study
experiment
- 16. Multiple Choice
You want to find out if people who eat a candy bar immediately before a math test get higher scores than people who do not.
survey
observational study
experiment
- 17. Multiple Choice
What is your current age?
biased
unbiased
- 18. Multiple Choice
Do you think teachers should be required to attend all home and away football games?
biased
unbiased
- 19. Multiple Choice
Do you agree or disagree with the following statement? Teachers should not be required to not supervise students during lunch.
biased
unbiased
- 20. Multiple Choice
Most teenagers text message during class. Are you one of them?
biased
unbiased
- Answer choicesTagsAnswer choicesTags