ABOUT

        In a measurement process, it is relevant to point out the aspects related as much the efficiency of the operations as costs associated to these measurements, either in a scientific research or in an industrial quality control. In this manner, it is extremely important to establish a size of the sample [1] compatible with the minimum reliability required for the process.

          The SAMPLE SIZE CALC software was developed with the objective to promote to the researcher or to the process analyst a practical way to determinate the samples’ necessary size, considering the maximum error allowed.

          This software aims to assist in the estimation of the sample size (N), from the Student’s t-distribution, depending on the Student coefficient (t), the pilot sample standard deviation (s) and the estimation error (ee), according to the equation below [1,2].

          The developers are part of the Tolerancing & Metrology Research Group listed below.

• Prof. M.Sc. Antônio Marcos Figueiredo Soares - IFPE;

• Prof. D.Sc. Carlos Augusto do Nascimento Oliveira- UFPE;

• Prof. D.Sc. Eduardo José Alécio de Oliveira- IFPE;

• Prof. D.Sc. José Eduardo Ferreira de Oliveira- IFPE;

• Prof. M.Sc. Nelson Gonçalves da Silva- IFPE;

• Prof. D.Sc. Rogério Pontes de Araújo- UPE;

• Prof. D.Sc. Sidney Teylor de Oliveira – CEFET-RJ;

• Research Assistant Lucas Freire da Luz Melo- IFPE;

• Research Assistant Lyálisson José de Melo Fagundes- IFPE;

• Research Assistant Marcus Thiago Guedes de Melo Torres- IFPE;

• Research Assistant Mázio Silva de Araújo- IFPE.

       CEFET-RJ - Federal Center for Techonological Education Celso Suckow da Fonseca, BRAZIL.

       IFPE - Federal Institute of Pernambuco, BRAZIL.

       UFPE - Federal University of Pernambuco, BRAZIL.

       UPE - University of Pernambuco, BRAZIL.

For more information, contact us by e-mail samplesizesoftware@gmail.com