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# Unit: Sampling distributions

AP Stats:
UNC (BI)
,
UNC‑3 (EU)
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#### 0

Possible mastery points

A sampling distribution shows every possible result a statistic can take in every possible sample from a population and how often each result happens - and can help us use samples to make predictions about the chance tht something will occur. This unit covers how sample proportions and sample means behave in repeated samples.

AP Stats:
UNC‑3 (EU)
,
UNC‑3.H (LO)
,
UNC‑3.H.1 (EK)
,
UNC‑3.H.5 (EK)
,
UNC‑3.I (LO)
,
UNC‑3.I.1 (EK)

## Biased and unbiased point estimates

### Practice

#### Quiz 1

Level up on the above skills and collect up to 240 Mastery points

AP Stats:
UNC (BI)
,
UNC‑3 (EU)
,
UNC‑3.K (LO)
,
UNC‑3.K.1 (EK)
,
UNC‑3.K.2 (EK)
,
UNC‑3.L (LO)
,
UNC‑3.L.1 (EK)
,
UNC‑3.M (LO)
,
UNC‑3.M.1 (EK)

## Sampling distributions for differences in sample proportions

AP Stats:
UNC (BI)
,
UNC‑3 (EU)
,
UNC‑3.N (LO)
,
UNC‑3.N.1 (EK)
,
UNC‑3.N.2 (EK)
,
UNC‑3.O (LO)
,
UNC‑3.O.1 (EK)
,
UNC‑3.P (LO)
,
UNC‑3.P.1 (EK)

### Practice

#### Quiz 2

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

AP Stats:
UNC (BI)
,
UNC‑3 (EU)
,
UNC‑3.H (LO)
,
UNC‑3.H.2 (EK)
,
UNC‑3.H.3 (EK)
,
UNC‑3.H.5 (EK)
,
UNC‑3.Q (LO)
,
UNC‑3.Q.1 (EK)
,
UNC‑3.Q.2 (EK)
,
UNC‑3.R (LO)
,
UNC‑3.R.1 (EK)
,
UNC‑3.R.2 (EK)
,
UNC‑3.S (LO)
,
UNC‑3.S.1 (EK)

## Sampling distributions for differences in sample means

AP Stats:
UNC (BI)
,
UNC‑3 (EU)
,
UNC‑3.T (LO)
,
UNC‑3.T.1 (EK)
,
UNC‑3.T.2 (EK)
,
UNC‑3.U (LO)
,
UNC‑3.U.1 (EK)
,
UNC‑3.U.2 (EK)
,
UNC‑3.V (LO)
,
UNC‑3.V.1 (EK)

### Practice

#### Quiz 3

Level up on the above skills and collect up to 320 Mastery points
Up next for you:

#### Unit test

Level up on all the skills in this unit and collect up to 1200 Mastery points!
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