Properties of the t-Distribution
As illustrated above, the t-distribution has many properties which differentiate it from the standard normal or z-distribution.
- The distribution shares the bell curve of the z, but reflects the variablility that is inherent with smaller sample sizes.
- The shape of the t-distribution is dependent on the sample size n .
- The standard deviation is greater than 1.
- As the sample size n increases, the shape of the curve approaches the standard deviation.