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hba
 2 years ago
Stats help required
hba
 2 years ago
Stats help required

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saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2\[mean = \frac{\sum fx}{\sum x}\]

wio
 2 years ago
Best ResponseYou've already chosen the best response.0ah, so it's just a weighted average.

kropot72
 2 years ago
Best ResponseYou've already chosen the best response.0Solve the following for x: \[\frac{12(x5)+40x+8(x+5)}{60}=10\]

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Whatt is the general formula @kropot72

ParthKohli
 2 years ago
Best ResponseYou've already chosen the best response.2\[\dfrac{\underbrace{x  5 + x  5 \cdots+ x5}_{\rm 12 ~times} + \underbrace{x + x\cdots x + x}_{\rm 40 ~ times} + \underbrace{x + 5 +\cdots+ x+5}_{\rm 8 ~times}}{12 + 40 + 8}\]

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Thanks a lot but there would be some general form of this :/

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2I wrote the general formula already.

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Shouldnt it be, \[\sum_{}^{}fx/\sum_{}^{}f\]

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2\[Arithmetic => \frac{x+y}{2} = 10.2\]

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2Geo mean formula: √(xy)

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Do i have to solve quad equations?

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2take square on both sides: xy = sqrt8.4 x = sqrt(8.4)/y

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2Now substitute this in the first equation

hba
 2 years ago
Best ResponseYou've already chosen the best response.1sqrt(xy)=8.4 xy=70.56 x=70.56/y

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2Actually i'm doing two things at once. XD

hba
 2 years ago
Best ResponseYou've already chosen the best response.1No worries c:,This thing is going into a quad equation :(

hba
 2 years ago
Best ResponseYou've already chosen the best response.1x=77.16,56.76 and y=77.16,56.76

hba
 2 years ago
Best ResponseYou've already chosen the best response.1I feel like i have made a mistake :/

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2x = 4.41, y = 15.99 x = 15.99, y = 4.41

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Lemme do it again,Stop playing with wolf :/

mathslover
 2 years ago
Best ResponseYou've already chosen the best response.0ok do post your answer here

mathslover
 2 years ago
Best ResponseYou've already chosen the best response.0if you're completed with your soln

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Okay x=15.98,4.414 and y=4.414,15.98

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Now next question, I am getting b=2,b=8 and a=8,a=2

hba
 2 years ago
Best ResponseYou've already chosen the best response.1So harmonic mean is 16/5=3.2

saifoo.khan
 2 years ago
Best ResponseYou've already chosen the best response.2Never heard of harmonic mean. :s

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Okay lets call someone else for that case,What about the observation do you think they are right? Btw,A.M is opposite of H.M.

hba
 2 years ago
Best ResponseYou've already chosen the best response.1And, H.M=N/(1/a1+1/a2+......1/an)

hba
 2 years ago
Best ResponseYou've already chosen the best response.1@mathslover Do you think my answers are correct?

mathslover
 2 years ago
Best ResponseYou've already chosen the best response.0lemme check tht .. wait

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Thanks but now i want to ask, As i have two diff observations a=8,b=2 and a=2,b=8 and the HM is same so should i show this two times?

mathslover
 2 years ago
Best ResponseYou've already chosen the best response.0yes you have to mention that it will be same in both cases

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Chalo okay namaz kai baad krtai hai.

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Han continue karlain @saifoo.khan

AravindG
 2 years ago
Best ResponseYou've already chosen the best response.0sorry I am a really busy ...

hba
 2 years ago
Best ResponseYou've already chosen the best response.1@saifoo.khan I am waiting :/

hba
 2 years ago
Best ResponseYou've already chosen the best response.1@hartnn Help pleaseeeeeeeeeeeeee

hba
 2 years ago
Best ResponseYou've already chosen the best response.1@hartnn See the last attachment

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.0same weighted average formula.

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.0(700*8.5+800*7.5+500*8)/2000

hartnn
 2 years ago
Best ResponseYou've already chosen the best response.0\(\sum_{}^{}fx/\sum_{}^{}f\)

hba
 2 years ago
Best ResponseYou've already chosen the best response.1I was thinking about using this but i am not getting why is sum of f=2000

hba
 2 years ago
Best ResponseYou've already chosen the best response.1I am getting mean=7.85,Am i right? @mathslover

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Close enough lol :P I am using a casio scientific calculator,I dont know why it rounded the answers :/

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Oh yeah i checked it again,Its 7.95 thanks. I have another question may i ask? @hartnn

hba
 2 years ago
Best ResponseYou've already chosen the best response.1Wait wait dont answer i am trying

hba
 2 years ago
Best ResponseYou've already chosen the best response.1\[\sum_{i=1}^{n}a_i=16.2\] Okay @hartnn Please explain
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