Teaching Statistics

Using Spreadsheets to Calculate Prob (X+Y=W)

Journal Article

Summary

Using the spreadsheet function SUMPRODUCT which calculates dot products, it is possible to compute the probabilities associated with the sums of independent discrete random variables. This allows the student to confirm properties of the sum of binomial and Poisson random variables. It also provides a method for computing the distribution of the sum of two (or more) arbitrary random variables. In addition, it also allows the student to compute the probabilities associated with the difference of random variables, and thus find the probability that one random variable exceeds another (or exceeds by a given amount).

Related Topics

Related Publications

Related Content

Site Footer

Address:

This website is provided by John Wiley & Sons Limited, The Atrium, Southern Gate, Chichester, West Sussex PO19 8SQ (Company No: 00641132, VAT No: 376766987)

Published features on StatisticsViews.com are checked for statistical accuracy by a panel from the European Network for Business and Industrial Statistics (ENBIS)   to whom Wiley and StatisticsViews.com express their gratitude. This panel are: Ron Kenett, David Steinberg, Shirley Coleman, Irena Ograjenšek, Fabrizio Ruggeri, Rainer Göb, Philippe Castagliola, Xavier Tort-Martorell, Bart De Ketelaere, Antonio Pievatolo, Martina Vandebroek, Lance Mitchell, Gilbert Saporta, Helmut Waldl and Stelios Psarakis.