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Statistics a...
Explore statistics and probability by analyzing data, understanding patterns, and predicting outcomes, fostering critical thinking and decision-making skills.
200+ videos and assessments
Standards aligned
Vetted by experts
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Analyzing one categorical variable
Two-way tables
Distributions in two-way tables
Displaying quantitative data with graphs
Describing and comparing distributions
More on data displays
Measuring center in quantitative data
More on mean and median
Interquartile range (IQR)
Variance and standard deviation of a population
Variance and standard deviation of a sample
More on standard deviation
Box and whisker plots
Other measures of spread
Percentiles
Z-scores
Effects of linear transformations
Density curves
Normal distributions and the empirical rule
Normal distribution calculations
More on normal distributions
Introduction to scatterplots
Correlation coefficients
Introduction to trend lines
Least-squares regression equations
Assessing the fit in least-squares regression
More on regression
Statistical questions
Sampling and observational studies
Sampling methods
Types of studies (experimental vs. observational)
Experiments
Basic theoretical probability
Probability using sample spaces
Basic set operations
Experimental probability
Randomness, probability, and simulation
Addition rule
Multiplication rule for independent events
Multiplication rule for dependent events
Conditional probability and independence
Counting principle and factorial
Permutations
Combinations
Combinatorics and probability
Discrete random variables
Continuous random variables
Transforming random variables
Combining random variables
Binomial random variables
Binomial mean and standard deviation formulas
Geometric random variables
More on expected value
Poisson distribution
What is a sampling distribution?
Sampling distribution of a sample proportion
Sampling distribution of a sample mean
Introduction to confidence intervals
Estimating a population proportion
Estimating a population mean
More confidence interval videos
The idea of significance tests
Error probabilities and power
Tests about a population proportion
Tests about a population mean
More significance testing videos
Comparing two proportions
Comparing two means
Chi-square goodness-of-fit tests
Chi-square tests for relationships
Inference about slope
Nonlinear regression
Analysis of variance (ANOVA)
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