Report—Report the average compressive strength as
the compressive strength of the material, in psi (Mpa) rounded
to the nearest whole psi (0.1 Mpa) except that if the strengths
of one or two of the cubes vary more than 15 % from the
average of the six, discard them and report the compressive
strength as the average of the remaining specimens. In case the
compressive strengths of three or more cubes vary more than
15 % from the average, discard the results and repeat the test.