can some1 help with this q please
#Discrete random variable q
spark pulsar
nocturne mulch
sd = E(X^2)-(E(X))^2
and then root ur answer
else u would have found vairance
part b
E(3X+4)=3E(X)+4
VAR(3X+4)=9VAR(X)
spark pulsar
sd = E(X^2)-(E(X))^2
how do i know what E(X^2) is
nocturne mulch
good question
unborn palm
very much
unborn palm
wys bro, u good?
yuhhh hows y13
unborn palm
is there any other part of the q
is "that can take the values one or two" meant to tell us anything
nocturne mulch
yuhhh hows y13
got quite a few tests to determine our predicted this month
so quite hectic to say the least
hbu'
unborn palm
oh damn our predicteds were determined by end of y12 mocks and these ones dont have an effect
nocturne mulch
is "that can take the values one or two" meant to tell us anything
defo but idk how to use it coz there could be numerour discrete rdv
unborn palm
so what ab ur end of y12 mocks
nocturne mulch
which take values 1 or 2
unborn palm
defo but idk how to use it coz there could be numerour discrete rdv
yeah i have no idea
nocturne mulch
oh damn our predicteds were determined by end of y12 mocks and these ones dont h...
ours is slightly diff
yr 12 mocks do hold osme weight
but we have 2 tests afterwards
to improve it even more if we wish
icl its diff with each department
weird
unborn palm
to improve it even more if we wish
fairs that's interesting
unborn palm
icl its diff with each department
oh 😭😭😭
that is very peculiar
wat subjects do u do
unborn palm
damn 😭😭😭
nocturne mulch
icl physics looking sticku
unborn palm
started off normal
nocturne mulch
might have to drop
nocturne mulch
started off normal
yh fm love tp be special
unborn palm
icl physics looking sticku
physics 100% my worst a level man
nocturne mulch
did u start if with 3?
unborn palm
might have to drop
seems like it remains horrid throughout exam boards if ur saying its lookin sticky 😭
unborn palm
did u start if with 3?
wa
OHHH
well it's weird my school is dumb and unorganised
i picked 3 at the start yeah
nocturne mulch
seems like it remains horrid throughout exam boards if ur saying its lookin stic...
yh lool
unborn palm
math fm phys
nocturne mulch
seems like it remains horrid throughout exam boards if ur saying its lookin stic...
i mean put it like this
for me to get good at physics, it takes a lot more effort and practice to get to the same level for smt like maths for instance
unborn palm
i picked 3 at the start yeah
n then 2 weeks in they were like u have to do 4 w fm so i was forced to pick CS and then i dropped it when i could and did the AS which i flopped so it was a waste of time and frees
unborn palm
for me to get good at physics, it takes a lot more effort and practice to get to...
literally it's
so much harder
nocturne mulch
n then 2 weeks in they were like u have to do 4 w fm so i was forced to pick CS ...
ah thats odd
unborn palm
it's not JUST practice practice practice like maths it's also understanding this weird shit and the exam qs r all so weird
unborn palm
was my easiest a level by far
nocturne mulch
it's not JUST practice practice practice like maths it's also understanding this...
precisely
unborn palm
but it was so easy thay i never revised it and treated my cs lessons as ILs
partially bc i was annoyed that i was forced to do it so i was being rebellious but anyways
unborn palm
u applying for maths?
yes wbu
nocturne mulch
partially bc i was annoyed that i was forced to do it so i was being rebellious ...
i hear that
its unfortunate
wasted a lot of time
but now u got more time in the mor important yr
unborn palm
yep it is what it is at least i made the decision and dropped
nocturne mulch
yes wbu
econ god willing🙏
yhh word
its good
never heard anyone say anything positive abt cs😂
unborn palm
econ god willing🙏
dayum nice those r strong subjects for econ then
unborn palm
never heard anyone say anything positive abt cs😂
💀💀