The difference between the economic agents that offer similar products or services is made based on quality. Consumers are too poor to accept poor quality goods. Ant the other external pressures accentuate the importance of quality as competitive advantage, in relation with increasing...

Measurement error (ME) is the difference between the true unknown value of a variable and the data assigned to that variable during the measuring process. The multiple correlation coefficient quantifies the strength of the relationship between the dependent and independent variable(s) in...