Those who compute moments of grouped frequency distributions on desk model calculators may find interest in the following simple feed-back design of computation. There are two general types of approaches to getting the required sums: Zf; Zf(Ui); Zf(Ui)2; etc.; Zf(Ui)' and some selected sum for Charlier's Check (C.C.), e.g. Ef(Ui 1)'. One approach is to compute Ef(Ui), Zf(Ui)2, *-, Ef(Ui) cumulatively and enter only the sums. This approach usually makes use of tables of powers of n which the computer feeds into the calculator, performing, say, Ef( Ui)3. In this process, the value of each f is entered into the desk calculator (n + 1) times the number of intervals (C.C. accounts for +1). This method of solution by columns saves making individual entries and requires no summation. On the other hand, failure to get C.C. means recalculation of column(s). A second approach is solution and entry of each f(Ui)' independently, then summing the respective columns. The method described below takes the latter approach and involves solution of f(Ui)' by rows, requiring no use of tables of powers and requiring entry of f into the calculator only once for each class interval. When recalculations are required, entries can be checked with great rapidity. The second approach is recommended as the digits in f, class intervals, and moments to be computed are increased. If only Zf(Ui) and Zf( Ui)2 are desired, these usually should be solved directly without individual tabular entry of products. Also, calculations through the 2nd moment are usually easier to recompute than to control by C.C. The proposed row solution design may excell the columnar approach for continuous routine solution of the first 3 or 4 moments by lessening