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Can someone please help me with putting the formulas into my calculator – especially the (sum of x)squared?
thanking you in advanceAll calculators are different, type your make and model into google, search and download Manual.. However, (sum of x)squared means you add together all the values of x then multiply the answer by itself. On my calculator, I would add together all the values of x then press the button x2 (2 being superscript).
Hope this helps!
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