Recent content by dhiraj

From what I have understood about Pearson correlation coefficient I have created a visual illustration, I would like to know if this understanding looks correct. Say I have a sample with 5 data points:- x y 8 6 16 8 20 16 28 12 32 20 My goal is to...

The title of the question may not be clear. But that is the real difficulty I am facing. I am not able to understand logic behind coming up with this formula for covariance. We know that the sample covariance formula is:- cov(x,y)=\frac{\sum(x_i - \bar{x})(y_i - \bar{y})}{n-1} I am not able...

Hi, I am studying about F ratio and how, as a random variable, it follows F Distribution. So let me explain what confuses me. This is what the theory says -- We draw two random samples $sample_x$ and $sample_y$ from two different Normally distributed populations with equal variance...