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Edexcel S1 - 15th June, 2016 [Exam Discussion]

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Reply 640

Zacken

Original post by drogon

So i stalked your profile and saw you insured warwick over imperial. Why?

Warwick > Imperial for maths. It just has a better course.

Reply 641

hogree

Original post by thelegend99

whoops @hogree if events are independent, does that meant they're linked (does one affect the other)? Saw an example with two children being late.

It means they aren't linked. What example?

Reply 642

drogon

Original post by Zacken

Warwick > Imperial for maths. It just has a better course.

But why? Like in what aspect?

Reply 643

anndz3007

Original post by Mina_

Sorry but what are you on about

about how coding affect the Sxx Syy value, If you are given Saa and Sbb, and given the code of x and y in term of a and b and you're asked to find Sxx Syy , that's how you do it

Reply 644

SweetChilliCake

Original post by jessyjellytot14

Can you use a black rollergel pen?

Posted from TSR Mobile

If you mean the black uniball inky pens then yeah.

Reply 645

Zacken

Original post by drogon

But why? Like in what aspect?

More flexibility, for one. Better teaching as well, I reckon. More choice - more rigour, etc...

Reply 646

thelegend99

Original post by hogree

It means they aren't linked. What example?

Whoops I thought that was for mutually exclusive?!. I can't remember the exact paper, but it was a Solomon question and it was on about how two students were late.

Reply 647

saitama kun

Original post by Exavior

One measure of location (from box plots the median)
On measure of spread (range or IQR for box plots)
And I think also skewness (Q2-Q1<Q3-Q2 positive Q2-Q1>Q3-Q2 negative)

thanx bruhhhh...👊🏻👊🏻👊🏻

Reply 648

hogree

Original post by thelegend99

Whoops I thought that was for mutually exclusive?!. I can't remember the exact paper, but it was a Solomon question and it was on about how two students were late.

Mutually Exclusive is when there's no Intersection. Independent means one doesn't affect another (so A|B is simply A).

Reply 649

Adorable98

Could someone please help me with part b to e.. :frown:

Reply 650

QuantumStuff

The effect of coding on Sxx/Syy/Sxy???
-Help

Reply 651

thelegend99

Original post by hogree

Mutually Exclusive is when there's no Intersection. Independent means one doesn't affect another (so A|B is simply A).

Gotcha, thanks!

Reply 652

username2250433

This may or may not have been asked but too many pages to look through, What formula's don't come up in the formulae book that we definitely need to know?

Reply 653

tazza ma razza

Original post by Zacken

Warwick > Imperial for maths. It just has a better course.

Wicked Mate - see you at Warwick next year :wink:

Reply 654

thelegend99

Original post by not_lucas1

This may or may not have been asked but too many pages to look through, What formula's don't come up in the formulae book that we definitely need to know?

mutually exclusive and independent.

Reply 655

tazza ma razza

CAN WE HAVE A FINAL ANSWER TO ALL THIS how does it affect sxy sxx and syy BS THESE QNs CLOG UP THE FEED - preferably with an example

Reply 656

hogree

Original post by QuantumStuff

The effect of coding on Sxx/Syy/Sxy???
-Help

If you have a = 10x + 6 and b = 5y + 3

Saa = (10)(10)(Sxx)
Sab = (10)(5)(Sxy)
Sbb = (5)(5)(Syy)

(edited 7 years ago)

Reply 657

username2250433

Original post by thelegend99

mutually exclusive and independent.

whats the formula for them? I believe independent is comparing p(a)*p(b) with p(a intersect b) am i right?

Reply 658

SANTR

Original post by Zacken

The table below the normal distribution table, i.e: the percentage points table gives you the z value to 4 d.p.

Ok, suppose the value was 0.8010 and not on either table, how would you determine the Z value?

Reply 659

Exavior

Original post by not_lucas1

This may or may not have been asked but too many pages to look through, What formula's don't come up in the formulae book that we definitely need to know?

Standard deviation. Mean for tabled data with frequency. Independent and mutually exclusive. Formula for calculating the quartiles and median. Expected value and varience in discrete random variables, discrete uniform distribution.

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Edexcel S1 - 15th June, 2016 [Exam Discussion]

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