Question
For the random variable X with probability density function f(x) = (x−3)2 /5; x = 3, 4, 5, the variance of X is:
More Welfare Economics Questions
- Let (Xi, I ≥ 1} be independent and identically distributed random variables with P(Xi =1) = p = 1-P(Xi = 0), Sn = ∑ni = 1 X i . The distribution of Sn is:
- The prices (in Rs.) for the commodity ABC,XYZ, MNO, and IJK in base year (2020) are 20, 18, 12, 24 and in current year (2022) are 25, 22, 15, 28 respective...
- If the first quartile of data set 8,10,8,7,9 is 7.5, then the value of quartile deviation is
- The arithmetic mean of the following frequency distribution of number of accidents X on week working days is: X: 2 ...
- For frequency distribution presentation , which option is wrong.
- Question 6
- For the variables X and Y, we collect 4 observations with ∑ X = 10,∑ Y = 14,∑ X2 = 30,∑ Y2 = 54,∑ XY = 31 The regression line y on x is
- If moment generating function of continuous random variable X is (λ /λ−t) ;t < λ, then E(X3) equals to:
- For the discrete distribution, the Pearson's coefficient of skewness β2 is always:
- If price-quantity are related for base year (0) and current year (1) are ∑ : p0q0 = 260,∑ : p1q0 = 395,∑ : p0q1 = 264,∑ : p1q1 = 422, then Marshall Edgewor...
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
