Question 993831

1     2,   3,   4,   5,   6 NUMBERS OF PERSONS
.41, .30, .14, .11, .03, .01 RENT STABILIZED

Q. What is the variance of the number of person living in each unit?

rent stabilized?

So the way i tried was
(1^2)(0.41)+(2^2)(0.30)+(3^2)(0.14)+(4^2)(.11)+(5^2)(.03)+(6^2)(.01) =5.74 
variance = E(x^2)-[E(x)]^2 = 5.74-(2.08)^2 = 1.1436 as my answer but it shows incorrect.

Can you please help me identify where i am wrong or is my answer put in different? Please help with answer. THanks
<pre>I got variance as: {{{highlight_green(1.4136)}}}, which is what you should have gotten, but you seem to have copied the wrong value. You see, {{{5.74 - 2.08^2 = 1.4136}}}, not 1.1436 as you posted. I hope this helps!!