statistics A2 level: post doubts here

[shanky631]

I don't understand when to square the variance and when not to??? can someone plz explain me??

 

[parthrocks]

I don't understand when to square the variance and when not to??? can someone plz explain me??

Same doubt!!!I have cos what I posted can someone relate it to that

 

[parthrocks]

Ranzis
View attachment 17998

This one!

 

[parthrocks]

I don't understand when to square the variance and when not to??? can someone plz explain me??

Are what u expecting varying/?????
i mean are there are sums in which they take 4square and some in 4??i have come across just 2

 

[shanky631]

Are what u expecting varying/?????
i mean are there are sums in which they take 4square and some in 4??i have come across just 2

post them both na plz

 

[parthrocks]

post them both na plz

Ok posting them!!bt i guess u have done them..in class@!!sakshi
and hey ya help me in may/june 2011/71 question 6 the first part plzzz its tricky

 

[shanky631]

Ok posting them!!bt i guess u have done them..in class@!!sakshi
and hey ya help me in may/june 2011/71 question 6 the first part plzzz its tricky

can u be precise what u don't understand in this.??

 

[Kumkum]

I don't understand when to square the variance and when not to??? can someone plz explain me??

Same doubt!!!I have cos what I posted can someone relate it to that

Check out my profile......i tried to explain it...