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# Unit: Sampling distributions

AP Stats:

UNC (BI)

, UNC‑3 (EU)

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### About this unit

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.### Practice

- Probability in normal density curvesGet 3 of 4 questions to level up!

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)

### Learn

### Practice

- Sample means and the central limit theoremGet 3 of 4 questions to level up!

### Practice

- Biased and unbiased estimatorsGet 3 of 4 questions to level up!

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)

### Learn

### Practice

- The normal condition for sample proportionsGet 3 of 4 questions to level up!
- Mean and standard deviation of sample proportionsGet 3 of 4 questions to level up!
- Finding probabilities with sample proportionsGet 3 of 4 questions to level up!

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)

### Learn

### Practice

- Mean and standard deviation of difference of sample proportionsGet 3 of 4 questions to level up!
- Shape of sampling distributions for differences in sample proportionsGet 3 of 4 questions to level up!

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)

### Learn

### Practice

- Mean and standard deviation of sample meansGet 3 of 4 questions to level up!
- Finding probabilities with sample meansGet 3 of 4 questions to level up!

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)

### Learn

### Practice

- Mean and standard deviation of difference of sample meansGet 3 of 4 questions to level up!
- Shape of sampling distributions for differences in sample meansGet 3 of 4 questions to level up!

Level up on the above skills and collect up to 320 Mastery points

Up next for you:

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

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