Transcription of ME Confidence Intervals: Bootstrap Distribution
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2/3/2014 1 Statistics: Unlocking the Power of Data Lock5 STAT 101 Dr. Kari Lock Morgan Confidence Intervals: Bootstrap Distribution S EC T I O N S 3 . 3 , 3 . 4 Bootstrap Distribution ( ) 95% CI using standard error ( ) Percentile method ( ) Statistics: Unlocking the Power of Data Lock5 Confidence Intervals Population Sample Sample Sample Sample Sample Sample .. Calculate statistic for each sample Sampling Distribution Standard Error (SE): standard deviation of sampling Distribution Margin of Error (ME) (95% CI: ME = 2 SE) statistic ME Statistics: Unlocking the Power of Data Lock5 Reality One small .. WE ONLY HAVE ONE SAMPLE!!!! How do we know how much sample statistics vary, if we only have one sample?!? Bootstrap !
• magine the “population” is many, many copies of the original sample • (What do you have to assume?) “Population” Statistics: Unlocking the Power of Data Lock Reese’s Pieces “Population” Sample repeatedly from this “population”
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