AP Stats midterm review

Front

What are complementary events?

Back

Complementary events are two outcomes of an event that together cover the entire sample space. For example, in a card draw, drawing a black card and drawing a red card are complementary events.

Front

What is the mean and standard deviation of a normal distribution?

Back

The mean is the average value, and the standard deviation measures the spread of the data around the mean. For example, in a normal distribution with a mean of 60 g and a standard deviation of 12 g, most values lie within 60 ± 12.

Front

What does a stemplot represent in statistics?

Back

A stemplot (or stem-and-leaf plot) is a method of displaying quantitative data that helps visualize the distribution while retaining the original data values.

Front

What is the probability of an event?

Back

The probability of an event is a measure of the likelihood that the event will occur, expressed as a number between 0 and 1.

Front

What is a binomial experiment?

Back

A binomial experiment is a statistical experiment that has the following properties: a fixed number of trials, two possible outcomes (success or failure), independent trials, and a constant probability of success.

Front

What is the IQR (Interquartile Range)?

Back

The IQR is a measure of statistical dispersion, representing the range between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

What is the significance of variance in statistics?

Back

Variance measures how far a set of numbers is spread out from their average value. A low variance indicates that the data points tend to be close to the mean.

Front

How do you calculate the probability of an event given another event?

Back

The probability of event A given event B is calculated using the formula P(A|B) = P(A and B) / P(B).

Front

What is a normal distribution?

Back

A normal distribution is a continuous probability distribution characterized by a symmetric bell-shaped curve, where most observations cluster around the central peak.

Front

What does it mean for events to be independent?

Back

Two events are independent if the occurrence of one event does not affect the probability of the other event occurring.