On Demand

Trigonometry

Learn about the definition of the basic trigonometric functions (sin(x), cos(x), and tan(x)), and use advanced trigonometric functions for various purposes.This course contains 11...

Khan Academy

On Demand

Trigonometric equations and identities

Learn how to solve trigonometric equations and how to use trigonometric identities to solve various problems.This course contains 7 segments:The inverse trigonometric functionsLearn about the inverse...

Khan Academy

On Demand

Analyzing categorical data

This unit covers methods for dealing with data that falls into categories. Learn how to use bar graphs, Venn diagrams, and two-way tables to see patterns and relationships in categorical data.This...

Khan Academy

On Demand

Summarizing quantitative data

This unit covers common measures of center like mean and median. We'll also learn to measure spread or variability with standard deviation and interquartile range, and use these ideas to determine...

Khan Academy

On Demand

Study design

Getting reliable data is vital if we want to make correct conclusions.The process of collecting data through studies involves sampling, observations, surveys, and experiments.This course contains 2...

Khan Academy

On Demand

Probability

Few things are certain in life. Probability gives us an idea of the likelihood or unlikelihood of different outcomes.This course contains 10 segments:Probability basicsFlip a quarter a hundred times....

Khan Academy

On Demand

Probability

This unit on probability covers how to use simulations to calculate experimental probabilities and a variety of other methods (the addition rule, the multiplication rule, conditional probability) for...

Khan Academy

On Demand

Random variables

A random variable is some outcome from a chance process, like how many heads will occur in a series of 20 flips (a discrete random variable), or how many seconds it took someone to read this sentence...

Khan Academy

On Demand

Confidence intervals

Confidence intervals give us a range of plausible values for some unknown population parameter based on results from a sample. This unit covers confidence intervals for means and proportions using...

Khan Academy

On Demand

Significance tests (hypothesis testing)

If a basketball player says they make 75% of the shots they take, but they only make 65% of shots in a sample, does that mean they're lying? Significance tests give us a formal process for using...

Khan Academy