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Summarise probability distributions

Get P and critical values for the Chi-squared distribution

Calculate P values from the chi-squared distribution, corresponding to specified chi-squared statistic and degrees of fredom. Also calculates critical values for the same chi-squared distribution corresponding to the specified alpha (significance) level.

Inputs are the test statistic, degrees of freedom and the specified alpha for calculation of critical values.

The program outputs the P value corresponding to the given inputs, the critical value corresponding to the specified alpha and the probabilities associated with values greater than or less than the observed Chi-squared value, as well as a summary and plot of the distribution.