AP Stat Unit 3 Review 1

Calling households at 11am during the week is most likely to create which problem?

Which experimental design reduces variability by grouping subjects before assigning treatments?

If you wanted to prove with absolute (100%) certainty that a coin was "fair", how many tosses would you need?

What is one potential drawback of controlling other variables?

A "push poll" is most closely related to which issue?

Which experimental design is used in cases like the Pepsi Challenge and twin studies?

Which of the following gives the strongest evidence for causation (when done correctly)?

In a study of vehicle weights and MPG ratings, which would be the explanatory variable?

If the American Community Survey involves 1% of 330 million Americans, the sample is 3.3 m, and the pop 330 m.

36518 73677 89116. If you wanted a sample of 100 without replacement, what would be the 4th individual?

Which sampling method makes it easier to identify effects by reducing variability in groups?

Which is NOT true of a well-done cluster sample?

If Darby claims she is psychic, and she guesses 8 of 10 coin tosses correctly, what's the main problem?

It would NOT be appropriate to conclude that Asians are better at math because Asian Americans outperform on math tests.

If a lot of people feel better after taking a particular drug, then the effect is not just psychological.

Which of the following would not be an important step in determining the quality of a pot of soup?

Which word is not like the other 3?

Which of the following is like eenie meenie miney moe?

If the correlation between A and B, then either A causes B or B causes A.

Which of the following are important criteria for judging whether a correlation is likely causal?

If a Trump supporter hangs up on a pollster calling from CNN ("fake news"), this is an example of...

Which means keeping other variables the same to isolate treatment effects?

Inferential statistics is an example of deductive reasoning.

If you put the marbles back in the jar, that is sampling without replacement.

Observational data can give strong evidence of causation when certain conditions are met.

If, in the Pepsi challenge, the person distributing the drinks knows, but the subjects don't, this is...

What kind of difference is so large that it will justify changing behavior?

An online poll about immigration is most likely to suffer which of the following problems?

What is the statistical term for when a flawed process systematically favors a particular response?

"A random sample of 1,000 Florida high school students shows..." The population is what?

"There are 3 kinds of lies: lies, d!@#$% lies, and _________."

RANDOM ASSIGNMENT is the best way to ensure a sample is representative before doing a survey.

A parameter is used to summarize a sample, and a statistics is used to summarize a population.

Which balances out differences among individuals in treatment groups so that the only systematic diff is the treatment?

Which word is not like the other 3?

Which of the following gives every possible sample of size n an equal chance of being selected?

Which of the following is not a valid way to obtain a simple random sample?

Which kind of placebo would work the best?

What kind of difference is so large that it is probably not due to chance?

John, Jack, Jim, Jake. Start at John, and do a systematic sample counting by 10. Who is the first person selected?

Why is it problematic to claim that schools like Harvard cause their graduates to earn higher salaries?

If I give 20 children coffee, and they are more violent afterward, I'm neglecting what?

If studies show a link between sunscreen use and shark attacks, which would be a confounding variable?

You should wait to make generalizations until after you're sure that the sample is representative.

Generally, Greek letters are used to represent sample statistics.