What is the probability that someone will draw the same lottery numbers two times in a row? Very small, but it can—and has—happened! Statisticians often work with very large or small numbers. The second lesson in a statistics playlist...

Statistics in the wrong hands can be a dangerous thing. The first installment of a five-episode series explains the basics of statistics. The instructor focuses on the usefulness of statistics and how to identify misuse of stats.

Scientific results should be reliable, accurate, and precise, but what is the difference between the three? The first video in a series of 29 uses the metaphor of dart throwing to explain these three key terms in scientific experimental...

Video program shows viewers how to use standard deviation, compute relative frequencies, find percentiles, and determine whether a distribution is normal. Real-life connections made by examining data from vehicle-emissions standards and...

High level analysis of density curves. A focus on median, mean, left-skew and right-skew.

This lesson shows how charts can be used to determine and list Z-scores.

This lesson shows how charts can be used to determine and list Z-scores.

This lesson shows how charts can be used to determine and list Z-scores.

This lesson shows how charts can be used to determine and list Z-scores.

In this lesson, students are introduced to Z-scores and their relevance to variance and distribution in data sets.

In this lesson, students are introduced to Z-scores and their relevance to variance and distribution in data sets.

Calculate z-statistic of a population mean. [9:44]