Edexcel Statistics S1 Formulae You Need to Remember

Formulae you will need to remember for the Edexcel AS Mathematics Statistics S1 6683 Specification.

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  • Created on: 23-05-14 15:38
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Formulae to Remember ­ Statistics S1
x f x
Mean = x = n or f
(x2) x 2 (x2)
Variance = =2
n - ( n ) or n - (x)2
Standard Deviation = = V ariance
Interquartile Range (IQR) = Q3 - Q1
P(A') = 1 ­ P(A)
For Independent Events P(B|A) = P(B)
A and B P(A|B) = P(A)
P(AB) = P(A) x P(B)
E (aX + b) = aE (X ) + b)
V ar(aX + b) = a2 V ar(X )
Cumulative Distribution P (X x0 ) = P (x)
Function F (x0)
Normal Random Variable Z = X -

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