Edexcel Statistics S1 June 2011 Q1d : ExamSolutions

[ExamSolutions_Maths]

Good luck. Hope all goes well for you.

[joeyoh]

I understand now, my Maths teacher talked me through it. At the time, I just got confused. Yes, it's fairly easy now thanks :)

[joeyoh]

I don't understand fully. The question is a simple one mark and I couldn't follow what you talked about unlike the rest of your videos. I followed until you made the formula = Sxx. I couldn't relate to why, so could you please help? I think that you showed that: Sxx = [formula] and so Shh = [formula] (where all x values should be /1000). Is that correct?