ABSTRACT
Unfortunately there is another problem which has been carefully avoided in earlier chapters but will now be brought out into the open. This concerns the assumptions on which significance tests are based. It is essential that the user of a significance test should be aware of the assumptions which were used in the production of the table of critical values. Any statistical table is intended to be used in certain circumstances. The use of a table of critical values in a situation for which it was not intended can lead to the drawing of invalid conclusions.
