Programmable calculator (TI-59) programs for marketing and price analysis in Third World countries

This study investigates the use of the Texas Instrument TI-59 hand-held programmable calculator for preliminary analysis of field data on agricultural prices. The basic machine is first described, and simple programming procedures are discussed in nontechnical terms, as are the mechanics of partitioning memory, entering data, and using magnetic cards. Presented next are four original programs to accomplish the following common price analysis procedures: deflating time series; moving averages and centered moving averages; seasonal adjustment; and trend analysis. Each program is described in detail; included are comprehensive user instructions, a step-by-step example based on an actual data set, worksheets which can be photocopied for use with the program, and a review of relevant economic theory, all geared to the nonexpert user. A final chapter reviews the advantages and disadvantages of using the TI-59 for price policy research in developing countries, concluding that its use is appropriate when unavailability, high cost, slow turnaround time, or personnel shortages prevent the use of a computer. Suggestions for future research and a 28-item bibliography are included.