Understanding Normal Distribution of Data
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Beginner
Start here! Easy to understand
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Beginner Explanation
A bell curve represents normal distribution with $μ$ in the center.
Practice Problems
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1
Quick Quiz
Single Choice Quiz
Beginner
What percentage of data falls within one standard deviation $σ$ of the mean $μ$ in a normal distribution?
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2
Real-World Problem
Question Exercise
Intermediate
Teenager Scenario
Imagine you are measuring the height of your classmates. If the mean height $μ$ is 160 cm with a standard deviation $σ$ of 10 cm, what range covers approximately 95% of the heights?
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3
Thinking Challenge
Thinking Exercise
Intermediate
Think About This
Given the standard deviation $σ$ of a dataset, how would you describe the shape of the bell curve if $σ$ is large?
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4
Challenge Quiz
Single Choice Quiz
Advanced
For a dataset with mean $μ = 50$ and standard deviation $σ = 5$, what is the probability that a randomly selected data point is less than 45?
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Recap
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