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).

HideShow resource information
Preview of Edexcel A-level Mathematics 'Statistics 1 (S1)' Revision

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 ( <
)

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

Notes Tips
Mathematical 1. A real world problem is observed Advantages of mathematical models:
Models 2. A mathematical model is devised They simplify a complex situation
3. The mathematical model is used to make predicted They improve understanding of the situation
outcomes of the real world problem They are quick and easy to produce
4. Experimental data is collected and used to make They enable predictions to be made
observed outcomes of the real world problem They enable variables to be readily changed
5.…read more

Page 3

Preview of page 3

Here's a taster:

Remember to relate the summary to context
= 3 - 1 For positive skew, < 2 <
= 2 - 1 For negative skew, < 2 <
2 =
3( -2 )
> 0; positive skew Know an outlier is 1.5 interquartile ranges above the
3( -2 ) upper quartile or 1.…read more

Page 4

Preview of page 4

Here's a taster:

Probability P( ) = 1 - P() For independent events, draw a Venn diagram
P( ) = P() × P(|) For conditional events, draw a tree diagram
P( ) = P() + P() - P( ) P( ) =
P() + P() - P( )
P()
P(|) = P()
P( ) = 0; mutually exclusive
P(|) = P(); independent
P( ) = P() × P(); independent
Discrete Random F() = P( = 1 ) + P( = 2 ) +
Variables E() = ()
E(…read more

Comments

No comments have yet been made

Similar Mathematics resources:

See all Mathematics resources »See all resources »