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Unit: Confidence intervals

AP Stats:
UNC (BI)
,
UNC‑4 (EU)
,
VAR (BI)
,
VAR‑1 (EU)

0

Possible mastery points

Introduction to confidence intervals

AP Stats:
UNC (BI)
,
UNC‑4 (EU)
,
UNC‑4.A (LO)
,
UNC‑4.A.1 (EK)
,
UNC‑4.F (LO)
,
UNC‑4.F.1 (EK)
,
UNC‑4.F.2 (EK)
,
UNC‑4.F.3 (EK)
,
UNC‑4.F.4 (EK)
,
VAR (BI)
,
VAR‑1 (EU)
,
VAR‑1.H (LO)
,
VAR‑1.H.1 (EK)
Learn
Confidence intervals and margin of error
(Opens a modal)
Confidence interval simulation
(Opens a modal)
Interpreting confidence level example
(Opens a modal)
Interpreting confidence levels and confidence intervals
(Opens a modal)

Confidence intervals for proportions

AP Stats:
UNC (BI)
,
UNC‑4 (EU)
,
UNC‑4.A (LO)
,
UNC‑4.A.1 (EK)
,
UNC‑4.B (LO)
,
UNC‑4.B.1 (EK)
,
UNC‑4.B.2 (EK)
,
UNC‑4.C (LO)
,
UNC‑4.C.1 (EK)
,
UNC‑4.C.2 (EK)
,
UNC‑4.C.3 (EK)
,
UNC‑4.C.4 (EK)
,
UNC‑4.D (LO)
,
UNC‑4.D.1 (EK)
,
UNC‑4.D.2 (EK)
,
UNC‑4.F (LO)
,
UNC‑4.F.4 (EK)
,
UNC‑4.G (LO)
,
UNC‑4.G.1 (EK)
,
UNC‑4.H (LO)
,
UNC‑4.H.1 (EK)
,
UNC‑4.H.2 (EK)
Learn
Conditions for valid confidence intervals for a proportion
(Opens a modal)
Conditions for confidence interval for a proportion worked examples
(Opens a modal)
Reference: Conditions for inference on a proportion
(Opens a modal)
Critical value (z*) for a given confidence level
(Opens a modal)
Example constructing and interpreting a confidence interval for p
(Opens a modal)
Interpreting a z interval for a proportion
(Opens a modal)
Determining sample size based on confidence and margin of error
(Opens a modal)
Practice
Conditions for a z interval for a proportionGet 3 of 4 questions to level up!
Finding the critical value z* for a desired confidence levelGet 3 of 4 questions to level up!
Calculating a z interval for a proportionGet 3 of 4 questions to level up!
Sample size and margin of error in a z interval for pGet 3 of 4 questions to level up!

Quiz 1

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

Confidence intervals for means

AP Stats:
UNC (BI)
,
UNC‑4 (EU)
,
UNC‑4.O (LO)
,
UNC‑4.O.1 (EK)
,
UNC‑4.O.3 (EK)
,
UNC‑4.P (LO)
,
UNC‑4.P.1 (EK)
,
UNC‑4.Q (LO)
,
UNC‑4.Q.1 (EK)
,
UNC‑4.Q.2 (EK)
,
UNC‑4.Q.3 (EK)
,
UNC‑4.R (LO)
,
UNC‑4.R.1 (EK)
,
UNC‑4.R.2 (EK)
,
UNC‑4.T (LO)
,
UNC‑4.T.1 (EK)
,
UNC‑4.U (LO)
,
VAR (BI)
,
VAR‑7 (EU)
,
VAR‑7.A (LO)
,
VAR‑7.A.1 (EK)
Learn
Introduction to t statistics
(Opens a modal)
Simulation showing value of t statistic
(Opens a modal)
Conditions for valid t intervals
(Opens a modal)
Reference: Conditions for inference on a mean
(Opens a modal)
Example finding critical t value
(Opens a modal)
Example constructing a t interval for a mean
(Opens a modal)
Confidence interval for a mean with paired data
(Opens a modal)
Making a t interval for paired data
(Opens a modal)
Interpreting a confidence interval for a mean
(Opens a modal)
Sample size for a given margin of error for a mean
(Opens a modal)
Practice
Conditions for a t interval for a meanGet 3 of 4 questions to level up!
Finding the critical value t* for a desired confidence levelGet 3 of 4 questions to level up!
Calculating a t interval for a meanGet 3 of 4 questions to level up!
Sample size and margin of error in a confidence interval for a meanGet 3 of 4 questions to level up!

Quiz 2

Level up on the above skills and collect up to 400 Mastery points
Up next for you:

Unit test

Level up on all the skills in this unit and collect up to 800 Mastery points!

About this unit

Confidence intervals give us a range of plausible values for some unknown population parameter based on results from a sample. This unit covers confidence intervals for means and proportions using data from one sample.
AP® is a registered trademark of the College Board, which has not reviewed this resource.