⚠ Switch to EXCALIDRAW VIEW in the MORE OPTIONS menu of this document. ⚠
Text Elements
Point Estimate:
A statistic ( from sample ! ) that gives a reasonable estimation for the true population parameter
Confidence Interval: Every confidence interval for everything ever: Point Estimate +- margin of error
Interpret
Level - If we take many many samples & make a confidence interval for each, about _____ of them will capture the true Population Context ( e.g. green beads in the jar ) Interval - We are ____ confident that the interval from ____ to ____ captures the true ________ .
%
%
A
B
pop context
higher confidence level = higher margin of error ( wider interval )
higher sample size ( n ) = lower margin of error ( more narrow width )
Margin of Error DOES acccount for sample variability. she thinks it should be called a margin of variability
Margin of Error does NOT account for: - Nonresponse - undercoverage - response bias