What are z-scores? A z-score measures exactly how many standard deviations above or below the mean a data point is.

Find the z-score of a particular measurement given the mean and standard deviation.

A z-score is an example of a standardized score. A z-score measures how many standard deviations a data point is from the mean in a distribution.

Why do we calculate the probability of getting our result OR HIGHER? I know this varies depending on whether you want to test if a population value is greater or smaller or just different than expected. But …

Find the standard deviation of the data set. Round your answer to the nearest hundredth.

In this topic, we will learn what an angle is and how to label, measure and construct them. We will also explore special types of angles.

The video illustrates how to find the lengths of unknown sides on a shape by using the given perimeter and the lengths of known sides. Two examples are given, and in each case, the missing side lengths …

In any normal distribution, we can find the z-score that corresponds to some percentile rank. If we're given a particular normal distribution with some mean and standard deviation, we can use that z …

Qualitative sense of normal distributions Normal distribution problems: Empirical rule Standard normal distribution and the empirical rule (from ck12.org) More empirical rule and z-score practice (from …

Learn to measure angles and understand their properties with Khan Academy's Unit 3 on basic geometry.