developing a model for integrating safety, quality and productivity in ...

CostTimeReligionImportanceof StudyRecommendReasonsItemPersonal protective equipments(PPE)relationship between safety andcostrelationship between safety andtimerelationship between safety andreligionImportance of Study# ofstatementsCronbach'sCoefficient3 0.34210 0.49611 0.48612 0.63311 0.785Total 125 0.926Recommendations AndSuggestionsreasons for not concerning insafety12 0.7955 0.686In this manner, it can be figured out that the researcher proved the questionnaire wasvalid, reliable, and ready to distribute to population sample.3.11 Sampling methodA probability sampling method is any method of sampling that utilizes some form ofrandom selection. With probability sampling, all elements in the population havesome opportunity of being included in the sample, and the mathematical probabilitythat any one of them will be selected can be calculated. A simple random sample is agroup of subjects (a sample) chosen from a larger group (a population). Each subjectfrom the population is chosen randomly and entirely by chance, such that each subjecthas the same probability of being chosen at any stage during the sampling process.This process and technique is known as Simple Random Sampling (WikipediaEncyclopedia).In this research, simple random sampling was used to have a good representation ofpopulation. A list of contractors which was requested from PCU has been prepared ina way that only First, Second, and third classifications of contractors are listed. Thesamples were selected randomly from the list until the desired sample size has beenreached.67