# Empirical Rule

## Three steps from the mean for 68-95-99.7 percentages

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Empirical Rule

by CK-12 //basic
Use percentages associated with normal distributions to solve problems.
MEMORY METER
This indicates how strong in your memory this concept is
0

## The Empirical Rule

MEMORY METER
This indicates how strong in your memory this concept is
0

## Empirical Rule

by Melissa Moreno //basic
Use percentages associated with normal distributions to solve problems.
MEMORY METER
This indicates how strong in your memory this concept is
0

## The Empirical Rule

by Marion Van Hoose //
MEMORY METER
This indicates how strong in your memory this concept is
0

## More on the Empirical Rule

MEMORY METER
This indicates how strong in your memory this concept is
0
• PLIX

## The FDA and Food Safety

Empirical Rule Interactive
MEMORY METER
This indicates how strong in your memory this concept is
0
• Video

## Empirical Rule Principles

by CK-12 //basic
This video gives more detail about the mathematical principles presented in Empirical Rule.
MEMORY METER
This indicates how strong in your memory this concept is
1
• Video

## Empirical Rule Examples

by CK-12 //basic
This video shows how to work step-by-step through one or more of the examples in Empirical Rule.
MEMORY METER
This indicates how strong in your memory this concept is
0
• Video

## Normal Distributions and the Empirical Rule

by CK-12 //basic
Explains how to use the empirical rule, also known as the 68-95-99.7 rule, to calculate certain normal distribution probabilities. That's right! You don't always need a calculator!
MEMORY METER
This indicates how strong in your memory this concept is
1
• Lesson Plan

## Calculating the Standard Deviation and Normal Distribution Lesson Plan

by CK-12 //basic
This lesson plan covers Calculating the Standard Deviation and Normal Distribution and includes Teaching Tips, Common Errors, Differentiated Instruction, Enrichment, and Problem Solving.
MEMORY METER
This indicates how strong in your memory this concept is
0
• 0
• Critical Thinking

## Empirical Rule Discussion Questions

A list of student-submitted discussion questions for Empirical Rule.
MEMORY METER
This indicates how strong in your memory this concept is
0
• Real World Application

## Normal Distribution

Students will investigate why and how the SAT is scored to correspond with a normal distribution curve.
MEMORY METER
This indicates how strong in your memory this concept is
0
• Study Guide

## Normal Distribution Study Guide

This study guide looks at characteristics of a normal distribution curve, the empirical rule, z-score, standardizing normal curve, and approximating binomial distribution.
MEMORY METER
This indicates how strong in your memory this concept is
2
• Study Guide

## Area Under Density Curve of Normal Distribution

by Danielle Pintz //basic
covers normal density curves, the empirical rule, and z-scores
MEMORY METER
This indicates how strong in your memory this concept is
1
• Study Guide