The resulting goodness of fit of the 45 line gives a measure of the difference between a sample set and the theoretical distribution.

The test statistic can then be compared against the critical values of the theoretical distribution.

Q-Q plots can be used to compare collections of data, or theoretical distributions.

Q-Q plots are also used to compare two theoretical distributions to each other.

The choice of quantiles from a theoretical distribution has occasioned much discussion.

When the theoretical distribution of a statistic of interest is complicated or unknown.

-that showed that the theoretical distribution was nearly identical to the Solomon curve.

Both the observed and theoretical expected distributions are shown in Table 1.

The data are plotted against a theoretical distribution in such a way that the points should form approximately a straight line.

A formula often used for deriving the variance of a theoretical distribution is as follows: