Statistical testing
Technical
Purpose
- To include all kinds of statistical test that I have come across in reading literature.
- Would also be including tests used in time series analysis as well
List
T-statistic
Used when sample size is small and/or standard deviation is unknown
Z-table is used to find out the p-value and/or z-score at a given significance/confidence level
Its usually given by this formula
t-ratio statistic of the sample skewness is
asymptotically a standard normal random variablet-ratio statistic of the sample excess kurtosis is
which is asymptotically a standard normal random variableJarque-Bera test(JB) combines the two prior tests
which is asymptotically distributed as chi-squared random variable with 2 degrees of freedomall the above tests in this case are goodness of fit tests