Edexcel Statistics S1 January 2012 Q3 : ExamSolutions

[liverpoolfc]

Thank you so much for this! I did this as a mock test because my test is on Friday, and I didn't understand any of it, because my teacher is quite poor at teaching stats. You, sir, are a fantastic teacher and now I understand how to answer these sorts of questions. You have most definitely saved me in statistics, because your other videos are also great too :D

[ExamSolutions_Maths]

Thank you and its good to hear that your making progress.

[mv]

Hi, thank you for these videos! Could you help me out, how do you do logs on a sharp calculator? In your tutorial, you used a casio i think and its not the same for my calculator.

[ExamSolutions_Maths]

This is a standard result which I have given without proof. a(Var(X)) = a^2Var(X)

[MWKidGun]

Hi, i'm a great fan of you and your videos and would just like to say much appreciated, they help me alot. Just one question, in (e) why is the Var(X) multiplied by 7^2 and not by just 7? thankyou