Thank you for your help! Can you please help me figure out step by step what you did in the highlighted blue part.

I am only able for the test to use a standard calculator so I need to write it out. Thank you!

It’s simple the x value minus the mean and then you square the result.For example, the for example For group A the first value will be(8-9.25)2=1.5625Here 8 is the first value we are given and…