why is standard deviation biased which statement is true of the unbiased estimation of standard deviation why is the standard deviation biased why is it important that standard deviations be unbiased why does the standard deviation affect confidence intervals what does unbiased standard deviation mean in statistics what's an example standard deviation is standard deviation considered unbiased? does confidence interval depend on standard deviation why does unbiased standard deviation change p-value why is it important to test confidence intervals what is the standard deviation of the standard deviation? do confidence intervals always depend on standard deviation how to tell if your p-value is unbiased what is the purpose of the standard deviation when using a confidence interval? why does the p value of the confidence interval change when the standard deviation is biased? why do the confidence intervals have an unbiased standard deviation? why is it important to use the standard deviation why does the confidence interval depend on standard deviation why isn't standard deviation biased