standard deviation and whatnot
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5 Terms
1
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standard deviation
(often reported as ±) shows how much variation there is from the mean/avg
2
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data points of smaller/larger standard deviations
data points close together → smaller deviation
data points spread out → larger deviation
3
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what is standard error of the mean (SEM) used to represent
represents uncertainty in an estimation of mean & accounts for both sample size & variability
4
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as standard error grow smaller…
smaller SEM → increased accuracy (accurate estimation of the population
5
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what does the length of the error bars mean?
spread around the mean, shorter bars = less variability from the mean
Note 
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