By reference to the frequency distribution in Table 2.


By allusion to the number distribution in Table 2.21, individualize (a) the inferior normal expression of the principal assort, (b) the preferable normal assort expression of the principal assort, (c) the inferior fair expression of the principal assort, (d) the preferable fair expression of the principal assort, (e) the midpoint of the principal assort.Table 2.21 Ages of a Sample of Applicants for a Training ProgramAgeNumber of applicants18 and beneath 20520 and beneath 221822 and beneath 241024 and beneath 26626 and beneath 28528 and beneath 30430 and beneath 222Total50