Statistics Lectures - 7: Z-Scores
A series of free Statistics Lectures with lessons, examples & solutions in videos.
This is the seventh page of the series of free video lessons, “Statistics Lectures”. These lectures cover the concept and use of z-scores.
Related Pages
5: Variance & Percentiles
6: Skewness, Normal Distribution, Empirical Rule
8: Probability
9: Permutations & Combinations
Jump to Table of Contents
Statistics - Lecture 18: Z-Scores (Part One)
Statistics - Lecture 19: Z-Scores (Part Two)
Z-scores are standardized values that can be used to compare scores in different distributions.
Statistics - Lecture 20: Extra Z-Score Problems
Example:
In the United States, the average IQ is 100, with a standard deviation of 15.
What percentage of the population would you expect to have an IQ lower than 85?
What percentage of the population would you expect to have an IQ between 90 and 120?
Statistics Lecture Series - Table Of Contents
Check out our most popular games!
Fraction Concoction Game:
Master fractions in the lab: mix, add, and subtract beakers to create the perfect concoction!
Fact Family Game:
Complete fact families and master the link between addition & subtraction and multiplication & division.
Number Bond Garden:
Clear the board by matching number pairs that sum to ten in this garden-themed mental math puzzle.
Online Addition Subtraction Game:
Practice your addition and subtraction skills to help the penguin find its mummy.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.