T and Z tests are parametric teststhat are designed to measure the differences in behavior between a sample population and a universal population. How is the T/Z calculation represented on a bell curve? Is it a standard deviationor variance?
The t and z calculations are very similar, with the only difference in the calculations being that t uses the sample standard deviation while z uses the population standard deviation.
When t is calculated for small sample …
The expert determines how T/Z calculations are represented on a bell curve. Whether it is a standard deviation or a variance is determined.