Estimación muestral en la percepción de los servicios deportivos a través de la Teoría de la Generalizabilidad

Abstract

The present study uses the Generalizability Theory (GT) apply into the sport management area aiming to know the accurate sample size to evaluate the perceived quality. For this purpose, a compound structure was used for the participants (P) and items (I) aspects, with a fully crossed design. Applying general linear model (GLM), with both aspects, a variance analysis was realised and it estimated the generalization’s precision. The instrument was a survey composed for 25 items and the sample, in total 330, comes from a fitness centre in the city of Malaga. The obtain results shows a number of participants using a reliable register (ξρ²(δ) = 0.98), and it estimates the precision level in the generalization to the sample size used (generalizability coefficient, ξρ²(Δ) = 0.96), assuming in this side an important progress in relation to the efficiency in upcoming evaluations in sports services