Start learning 50% faster. Sign in now
The Ordinary Least Squares (OLS) method is used to estimate the parameters in a linear regression model. For the OLS estimator to be the Best Linear Unbiased Estimator (BLUE), it must satisfy the Gauss-Markov assumptions. These assumptions are: 1. Linearity : The relationship between the independent variables and the dependent variable is linear. 2. Random Sampling : The data is obtained through a random sample of the population. 3. No Perfect Multicollinearity : There is no perfect multicollinearity between the independent variables. 4. Zero Conditional Mean : The errors have an expectation of zero given any value of the independent variables. 5. Homoscedasticity : The errors have constant variance (σ2). 6. No Autocorrelation : The errors are uncorrelated with each other. Given these assumptions, the condition that is not necessary for OLS to be BLUE is: (a) All errors are normally distributed Normality of the errors is not required for the OLS estimator to be BLUE according to the Gauss-Markov theorem. Normality is only necessary if we want to make specific inference statements (like t-tests and F-tests) or for the errors to follow a normal distribution.
Which of the following statements is not correct about the trend when going from left to right across the periods of the periodic table
A. his subjects wisely
B. was a very kind and generous
C. king who looked after
D. everyone said that he
Match the following correctly.
Methane is emitted from which of the following?
If I hadn't come here / to learn English, / I wouldn't have make / so many new friends.
Which of the following states has literacy rate less than 80%, as per census 2011?
Which of the following is NOT a Fundamental Right in the Indian Constitution?
The Parliamentary left in India is significantly denotes, a Ideology of __________ socio-économic and political design in the Post Colonial situation
Accuracy of scientific knowledge is enhanced through
At Palais des Nations in Geneva, how many countries signed GATT on 30 October 1947?