Standardized test statistics are used in hypothesis testing. The general formula formula is: Standardized test statistic: (statistic-parameter)/(standard deviation of the statistic). The formula by itself doesn't mean much, unless you also know the three major forms of the equation for z-scores and t-scores.
Formula:
t = (xฬ - ฮผ0) รท (ฯ / โn)
Wherexฬ is sample mean
ฮผ0 is population mean
ฯ is sample standard deviation
n is sample size
t is test statistics in hypothesis testing