AP Stat Unit 3 Review 1

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

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

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)?

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

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

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

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

Which word is not like the other 3?

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

Which word is not like the other 3?

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

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

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...

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

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

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

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

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.

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

Generally, Greek letters are used to represent sample statistics.

Which of the following is like eenie meenie miney moe?

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

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

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

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

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

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

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

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

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

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

What is one potential drawback of controlling other variables?

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

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

Which kind of placebo would work the best?

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

Inferential statistics is an example of deductive reasoning.

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

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

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

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

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