X bar stands for the average of the values of X in the data set, and likewise in the case of Y bar; therefore,
Values of Xbar and Ybar
Then, the answers to the first two columns (top to bottom are)
The first column,Similarly, in the case of the second column
As for the next two columns,
The third column,
Similarly, in the case of the fourth column,
Calculating Sx,Sy, and SxSy