Suppose we have collected students’ grades at a certain test, and we have found that the mean of grades for male students is 70.2 and the mean for female students is 72.59.We can see that the two means are different but, is this difference statistically significant? T-Test can determine if there is a significant difference …
Pearson’s correlation coefficient is the test that measures the statistical linear relationship or association between two variables.Consider an example of a company with over 100 employees that wants to answer the following question:Are employees with more years of experience more likely to get paid more? We can see in the above scatter plot, as the …