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# Unit: Modeling data distributions

#### 0

Possible mastery points

## Percentiles

Practice
Calculating percentilesGet 3 of 4 questions to level up!

## Z-scores

Practice
Calculating z-scoresGet 3 of 4 questions to level up!

## Effects of linear transformations

Practice
Transforming dataGet 3 of 4 questions to level up!

## Density curves

Practice
Properties of density curvesGet 3 of 4 questions to level up!
Area under density curvesGet 3 of 4 questions to level up!

#### Quiz 1

Level up on the above skills and collect up to 500 Mastery points

## Normal distribution calculations

Practice
Normal distribution: Area above or below a pointGet 3 of 4 questions to level up!
Normal distribution: Area between two pointsGet 3 of 4 questions to level up!
Normal calculations in reverseGet 3 of 4 questions to level up!

#### Quiz 2

Level up on the above skills and collect up to 400 Mastery points

## More on normal distributions

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#### Unit test

Level up on all the skills in this unit and collect up to 900 Mastery points!

### About this unit

This unit takes our understanding of distributions to the next level. We'll measure the position of data within a distribution using percentiles and z-scores, we'll learn what happens when we transform data, we'll study how to model distributions with density curves, and we'll look at one of the most important families of distributions called Normal distributions.