Khan Academy
Khan Academy: Qualitative Sense of Normal Distributions (From Ck12.org)
Discussion of how 'normal' a distribution might be.
Khan Academy
Khan Academy: Normal Distribution Problems: Empirical Rule (From Ck12.org)
Using the empirical rule (or 68-95-99.7 rule) to estimate probabilities for normal distributions.
Khan Academy
Khan Academy: More Empirical Rule and Z Score Practice (From Ck12.org)
More Empirical Rule and Z-score practice.
Khan Academy
Khan Academy: Standard Normal Table for Proportion Between Values
Finding the proportion of a normal distribution that is below a value by calculating a z-score and using a z-table.
Khan Academy
Khan Academy: Standard Normal Table for Proportion Below
Finding the proportion of a normal distribution that is below a value by calculating a z-score and using a z-table.
Khan Academy
Khan Academy: Standard Normal Table for Proportion Above
Finding the proportion of a normal distribution that is above a value by calculating a z-score and using a z-table.
Khan Academy
Khan Academy: Threshold for Low Percentile
Find the cutoff for a given lower percentile in a normal distribution.
Khan Academy
Khan Academy: Finding Z Score for a Percentile
Example finding the minimum z-score and numerical threshold to be in a given percentile in a normal distribution.
Khan Academy
Khan Academy: Normal Distribution Excel Exercise
(Long-26 minutes) Presentation on spreadsheet to show that the normal distribution approximates the binomial distribution for a large number of trials.
Khan Academy
Khan Academy: Deep Definition of the Normal Distribution
Exploring the normal distribution.
Khan Academy
Khan Academy: How Parameters Change as Data Is Shifted and Scaled
See how transforming a data set by adding, subtracting, multiplying, or dividing a constant affects measures of center and spread.
Khan Academy
Khan Academy: Worked Example Finding Area Under Density Curves
Worked example finding area under density curves.
Khan Academy
Khan Academy: Median, Mean and Skew From Density Curves
High level analysis of density curves. A focus on median, mean, left-skew and right-skew.
Khan Academy
Khan Academy: Density Curve Worked Example
Analyzing skew, median, mean and height of a density curve.
Khan Academy
Khan Academy: Density Curves
An introduction to density curves for visualizing distributions. A brief review of frequency histograms and relative frequency histograms as well.
Sophia Learning
Sophia: Employing the Empirical Rule: Lesson 4
This lesson shows how to put the empirical rule to use. It is 4 of 7 in the series titled "Employing the Empirical Rule."
Sophia Learning
Sophia: Employing the Empirical Rule: Lesson 6
This lesson shows how to put the empirical rule to use. It is 6 of 7 in the series titled "Employing the Empirical Rule."
Sophia Learning
Sophia: Employing the Empirical Rule: Lesson 7
This lesson shows how to put the empirical rule to use. It is 7 of 7 in the series titled "Employing the Empirical Rule."