Development of a computer-aided program for the probability distribution of discrete community variables

Abstract

The objectives of this research were: 1) to develop a computer-aided program for the probability distribution of discrete community variables; 2) to study user satisfaction with the program; and 3) to calculate the probability distribution of random variables. The research was conducted as follows: 1) Research the relevant documents 2) create and design the program 3) Put the program to the test. 4) test the quality of the program. 5) Get the documentation ready for use. The research tools consisted of 1) a program to help calculate the probability distribution of discrete random variables developed with the Visual Basic for Applications (VBA) language in the Microsoft Office Excel 365 program developed in add-in format. The developed program is capable of calculating and graphing the probability mass function. The cumulative distribution function for a total of 6 distributions is the discrete uniform distribution. Binomial distribution: geometric distribution Negative Binomial Distributions hypergeometric distribution. 2) the Program Quality Assessment Questionnaire to calculate the probability distribution of discrete random variables. A sample for evaluating user satisfaction with the program developed by the researcher. Use a specific selection method. A student in the Mathematics and Applied Statistics Department. Nakhon Ratchasima Rajabhat University had a student body of 30 people. The statistics used in the data analysis were mean () and standard deviation (S.D.). The results showed that the program quality assessment was at a good level ( = 4.28 , S.D. = 0.64). When considering each aspect, it was found that the reliability of the system was at a good level ( = 4.29 , S.D. = 0.64). The ease of use of the system is at a good level ( = 4.28 , S.D. = 0.63).