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# Unit: Modeling data distributions

AP Stats:
UNC (BI)
,
UNC‑1 (EU)
,
VAR (BI)
,
VAR‑2 (EU)

#### 0

Possible mastery points

## Percentiles (cumulative relative frequency)

AP Stats:
UNC (BI)
,
UNC‑1 (EU)
,
UNC‑1.G (LO)
,
UNC‑1.G.4 (EK)
,
UNC‑1.I (LO)
,
UNC‑1.I.5 (EK)
Practice
Calculating percentilesGet 3 of 4 questions to level up!

## Z-scores

AP Stats:
VAR (BI)
,
VAR‑2 (EU)
,
VAR‑2.B (LO)
,
VAR‑2.B.1 (EK)
,
VAR‑2.B.2 (EK)
,
VAR‑2.C (LO)
,
VAR‑2.C.1 (EK)
Practice
Calculating z-scoresGet 3 of 4 questions to level up!
Comparing with z-scoresGet 3 of 4 questions to level up!

## Effects of linear transformations

AP Stats:
UNC (BI)
,
UNC‑1 (EU)
,
UNC‑1.J (LO)
,
UNC‑1.J.4 (EK)
Practice
Transforming dataGet 3 of 4 questions to level up!

#### Quiz 1

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

## Density curves

AP Stats:
UNC (BI)
,
UNC‑1.F (LO)
,
UNC‑1.F.2 (EK)
,
UNC‑1.M (LO)
,
UNC‑1.M.2 (EK)
,
VAR‑6.A.1 (EK)
Practice
Properties of density curvesGet 3 of 4 questions to level up!
Area under density curvesGet 3 of 4 questions to level up!

## Normal distributions and the empirical rule

AP Stats:
VAR (BI)
,
VAR‑2 (EU)
,
VAR‑2.A (LO)
,
VAR‑2.A.2 (EK)
,
VAR‑2.A.3 (EK)
,
VAR‑2.A.4 (EK)
Practice
Empirical ruleGet 3 of 4 questions to level up!

## Normal distribution calculations

AP Stats:
VAR (BI)
,
VAR‑2 (EU)
,
VAR‑2.B (LO)
,
VAR‑2.B.3 (EK)
,
VAR‑2.B.4 (EK)
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 600 Mastery points
Up next for you:

#### Unit test

Level up on all the skills in this unit and collect up to 1000 Mastery points!