Three randomly selected households are surveyed. The numbers of people in the households are 1, 4 and 10. Assume that the samples of size n=2 are randomly selected with replacement from the population of 1, 4 and 10. Listed below are the nine different samples:
1,1 1,4 1,10 4,1 4,4 4,10 10,1 10,4 10,10

Find the variance of each of the nine samples: (find s^2 and probability)

s^2 is 4.5, 0, or 1? Whats the probability?
s^2 is 9, 4.5, 2.3? Whats the probability?
s^2 is 18, 72, or 9? Whats the probability?
s^2 is 20.3, 81 or 40.5? Whats the probability?

Question

Three randomly selected households are surveyed. The numbers of people in the households are 1, 4 and 10. Assume that the samples of size n=2 are randomly selected with replacement from the population of 1, 4 and 10. Listed below are the nine different samples: 
1,1  1,4  1,10  4,1  4,4  4,10  10,1  10,4  10,10 

Find the variance of each of the nine samples: (find s^2 and probability)

s^2 is 4.5, 0, or 1? Whats the probability?
s^2 is 9, 4.5, 2.3? Whats the probability? 
s^2 is 18, 72, or 9? Whats the probability?
s^2 is 20.3, 81 or 40.5? Whats the probability?

andijo76 · Answer

I think this one you need to do it this way 
|dw:1392269734421:dw|

andijo76 · Answer

add each one individualy and divide by 2

anonymous · Answer

LOL I already figured out this one ..I have more from today though...

andijo76 · Answer

is that how you do it  I was not sure if this is the right way to do it i posted this one but did not get an answer I do not have any others like this i dont think

andijo76 · Answer

yours is a little different then mine my numbers are 1,3 and 8

anonymous · Answer

funny.

andijo76 · Answer

how weird is it that we are from the same school doing the same or almost the same questions

anonymous · Answer

LOL - very weird!