# Edexcel A-level Mathematics 'Statistics 1 (S1)' Revision

Contains a list of all the formulae you need for the exam, as well as further notes and tips on the Edexcel specification of Statistics 1 (S1).

- Created by: Applequestria
- Created on: 08-07-16 11:10

First 93 words of the document:

Statistics 1

Formulae

Representation and Summary

=

=

2 2 2 2

=

-(

) =

- ( )

3( -2 )

2 =

Correlation and Regression ( )2 ( )2

= ( 2 ) -

= ( 2 ) -

( ) 2 ( )2

= ( 2 ) -

= ( 2 ) -

( )( ) ( )( )

= () -

= () -

=

×

=

=

- (

)=

- ( )

Probability P( ) = P()P(|)

P( ) = P() + P() - P( )

P()

P(|) = P()

Discrete Random Variables E() = ()

E( 2 ) = ( 2 )

Var() = E( 2 ) - [E()]2

E( + ) = E() +

Var( + ) = 2 Var()

The Normal Distribution -

P( < ) = P ( <

)

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