Standard Error of Mean Review
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7 Terms
1
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what does SEx measure
the validity of the mean of data
2
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what is the formula for SEx
standard deviation/ square root of the number of terms (n)
3
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what does a bigger SEx value mean
less reliability of the data
4
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what can help increase reliability of the data
a bigger sample size
5
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how do you find the 95% confidence interval
mean +/- 2(SEx)
6
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what does 95% confidence interval mean
95% sure that when the trial is repeated, the mean will fall in the 2SEx Range
7
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the 2SEx range is represented by a __________ on a graph
error bar
Note 
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