This value is found by subtracting the mean and then dividing by the standard deviation.

The term for a systematic preference shown in a study.

The term for the fact that our samples may be different from one another due to random chance.

The variable we change.

Mickey's Dog or Roman God of Death? This dwarf-planet was excluded from the official list of planets in 2006

The center of a Normal Distribution

An unbiased method of sampling

The proportion of our sample that gives a specific response.

The individuals to whom we give our treatments.

This gas giant is the largest planet in the Milky Way

The proportion of our data within 2 standard deviations from the mean

A biased method of sampling that chooses individuals based on how easy they are to access.

The average distance from our sample proportion.

When the belief in a treatment causes it to take effect.

The hottest planet in the Solar System.

The rule which tells us what percent of the Normal Distribution is within 1, 2, or 3 standard deviations of the mean

A biased method of sampling where a survey is publicly posted with individuals opting to respond.

The interval that has a 95% chance of containing the true population proportion.

The individuals who we give no treatments to

While all gas giants have rings, this one's spin vertically rather than horizontally.

The buttons we press on our calculator to find proportions between two z-scores.

This lets us draw inferences about a population

The way we find Margin of Error

What lets us make cause-and-effect conclusions

The group of objects containing Pluto, Eris, and other dwarf planets.