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Topic 6 IB SEHS Complete Solutions
Topic 6 IB SEHS Complete Solutions 
Standard Deviation ️spread of scores around the mean or average 
Error Bars ️are a graphical representation of the variability of the data, depict standard deviation 
Normal Distribution ️when 68% of all values are between +/- 1.0 standard deviation and 95% lie 
between +/- 2.0 
Coefficient of Variation ️the ratio of the standard deviation to the mean expressed by a percentage 
T-test ️inferential statistical test- p value must be <5% 
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