# Relationship Between Two Scale Variables

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As stated by Mirabella (2011, p. 7-1), “When we want to evaluate the relationship between two scale variables, we turn to Correlation.” Furthermore, when we measure correlation, we are determining how likely the two variables are associated (Mirabella, 2011). Even more importantly, we must know that correlation does not equal causation (Mirabella, 2011). Therefore, “The key is that there is correlation and not causation” (Mirabella, 2011, p.7-1). The objective of a correlation analysis is to detect whether two variables have a relationship, and to assess the strength of the relationship between the variables. Here we want to determine and test if there’s a correlation between the BS GPA and the MBA GPA and whether or not your…show more content…
A strong correlation will have a range of .70 to .99, a moderate correlation will have a range of .30 to .69, and a weak correlation will have a range of .01 to .29. Furthermore, when the correlation is 0 it indicates that no correlation exists and the data is simply random (Mirabella, 2011). Furthermore, correlation coefficients is one of the On the other hand correlation coefficient is one tool that is utilized often in statistics and a vitally important measure in decision making, data analysis, classification, and pattern recognition (Singh, 2015). According to Wu and Hung (2016, p. 1) states, “To determine the correlation between phenomena 푋 and 푌, a scatter plot is often used. Using a scatter plot, the correlation between phenomena 푋 and 푌 can be determined to be positive, negative, or statistically independent.” Furthermore, regression is used to examine the relationship between one dependent and one independent variable. However, since both correlation and regression both deal with a relationship among variables, it is essential to know that neither can expound on establishing the cause and effect relationships. They only show the extent in which the variables are associated with each other. Simply put, regression examines the relationship between one dependent and one independent variable. To further expound on using the essential tool of the scatterplot, “The line drawn through the scatterplot