I really need help with this Statistics question ASAP

Question

Use the data below to complete the following calculations. 

342, 243, 384, 281, 3

∑x=

∑x²=

(∑x)²=

Answer 1

You just need to do the following to compute thee answer for each part of the question:

∑x=simply add the 5 data points together

∑x²=first, square each data point & then add those numbers (the squares) together

(∑x)²=square the answer you got for the first question/part of this problem

That should be enough for you to do the calculations & get the right answers.