The t-distribution (or Student's t-distribution) has similarities to the normal distribution in shape, but with heavier tails. This applet allows users to drag a slider to change the degrees of ...

Basic statistical techniques can be utilized to calculate standard deviation in order to evaluate the error margin in a measurement. Yet, even the estimated standard ...

Test for the mean of a normal distribution with unknown variance using a t-statistic with appropriate degrees of freedom Construct confidence intervals, symmetric or otherwise, from small samples, for ...