Question
Ravi scored 50% more in Economics than in Accountancy. If
the average of his marks in Economics, Accountancy, and Business Studies is 88 and his marks in Business Studies is 94, find his marks in Accountancy.Solution
ATQ,
Total marks scored by Ravi in Economics, Accountancy, and Business Studies = 88 × 3 = 264
So, marks in Economics and Accountancy = 264 – 94 = 170
Let the marks in Accountancy be ‘x’.
So, marks in Economics = 1.5x
So, x + 1.5x = 170
2.5x = 170
x = 170 / 2.5
x = 68
So, marks obtained by Ravi in Accountancy = 68 marks
Which one of the following is not an assumption of Classical Linear Regression Model
Which of the following statements is NOT correct in the context of quantity theory of money?
In the case of cost-push inflation, other things being equal:
The A.M. and G.M. of a distribution are 12.5 and 10 respectively. Then the H.M. is
In which of the following models, price  is driven down to marginal cost?
 Which method is used by Hicks to eliminate the income effect when price of a product is changed
If Y = -10X and X = -0.1Y, then r is equal to:
Calculate the standard error of the estimate of Y on X regression equation for the following data- N =50 , ∑y2 = 300 , ∑xy = 30, ∑x
What is the variance of first n natural numbers
What is sum product of the error an independent variable in OLS estimation
