what is the value of zero when the confidence interval is below the standard deviation how do you know if the confidence interval is negative for a statistic what is the standard deviation from the mean what does negative mean in standard deviation how to tell if two standard deviations are negative when using a confidence interval, the number of homicides is what numbers are considered zero when calculating a standard deviation when to use confidence intervals to find a number below zero how to tell when a number is below zero in confidence interval testing calculating a standard deviation below zero why are the ranges below 2 standard deviations negative why can't the confidence interval be negative when calculating the mean of standard deviations why is there a zero on the standard deviation what is the lowest standard deviation on a data set calculating homicides using standard deviation how to find low values in confidence intervals can you have a negative statistic range for standard deviations? how to figure out zero for homicides can you have zero confidence interval