Her expertise is in personal finance and investing, and real estate. Joules Garcia / Investopedia Statistical significance is a claim that the data used in an analysis is not the result of chance ...

Standard deviation is a statistical measurement that looks at how far a group of numbers is from the mean. Put simply, standard deviation measures how far apart numbers are in a data set.

This often takes the form of a null hypothesis, which is a statistical hypothesis that ... critical value probability of 0.01 (1%) that the deviation between the observed and expected values ...