Curriculum
Statistics — Third Secondary
Unit 1: Correlation and Regression
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Unit 2: Advanced Statistical Measures
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Unit 3: Probability
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Unit 4: Random Variables
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Unit 5: The Normal Distribution
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Text lesson
The Normal Distribution and Its Applications
The Normal Distribution and Its Applications
Real-life applications and reversed problems
Real-life applications and reversed problems
- Normal distribution problems are used to find the proportion of people whose heights exceed a certain limit, the proportion of products that meet a specification, or the proportion of students whose scores fall in a certain range.
- The percentage is the probability multiplied by 100%.
- Sometimes the question is reversed we are given a probability and must find the value. We look up the z-value that corresponds to the probability in the table, and then convert back to the original variable using X = μ + zσ.
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