### All AP Statistics Resources

## Example Questions

### Example Question #4 : How To Conduct A Sample Survey

Which of the following is a continuous variable?

i. The average weight of a newborn puppy

ii. The number of snow days during the last month

iii. The amount of time that it takes to read a book

**Possible Answers:**

i and iii

None of the above

i only

ii and iii

i and ii

**Correct answer:**

i and iii

A continuous variable can take on an infinite continuum of possible real number values. Weight and the amount of time to read a book are continuous because it is impossible to write down all the distinct potential values.

### Example Question #1 : How To Define A Sample Set

For which of these is a binomial probability model most reasonable?

**Possible Answers:**

The number of cards drawn from a deck until the two jokers are drawn.

The colors of the gummy bears in a particular bag of gummy bears from a randomly selected store rack.

The number of times a randomly selected college student has gone to the beach in the last year.

The number of times, out of attempts, that a player can throw a basketball through the hoop from feet away.

The number of people surveyed until someone who has no pets is found.

**Correct answer:**

The number of times, out of attempts, that a player can throw a basketball through the hoop from feet away.

A binomial model counts the number of successes out of a specific number of attempts at a task when each attempt has a constant probability of success. The correct choice is the one that specifies the number of attempts.