Project 7 Essay Example | Topics and Well Written Essays - 500 words

Project 7 - Essay Example A positive (+) value indicates that there is a direct or positive relationship and a negative value indicates that there is an indirect or negative relationship. A direct relationship indicate that as A increases B increases with it and vice versa; while a negative relationship indicates that as A increases B decreases and vice versa. If r = 0, there is no relationship. The coefficient of determination is found by squaring the coefficient of correlation. According to Webster.edu (n.d.) it is a measure of the proportion of the variance in B that can be explained by knowing A and vice versa and provides one of the best means of for evaluating the strength of the relationship between two variables. In order to determine whether there is a correlation between the two sets of test scores we would first need to state the null hypothesis that is to be tested. According to Mason and Lind (1996) this hypothesis is called the null hypothesis and is designated H0. There is also an alternative h ypothesis that is designated H1; this indicates what would be the conclusion if the null hypothesis is rejected. In this case the null hypothesis would indicate that there is no correlation between both test scores and in the alternative it would indicate that a correlation exists. The null and alternative hypothesis is stated as follows. H0: Â µ = 0 H1: Â µ ? 0 We now need to determine alpha which is the level of significance.