Question
In a multiple linear regression model, the presence of
perfect multicollinearity among the explanatory variables will primarily result in which of the following issues?Solution
Solution: · Multicollinearity refers to a high linear correlation among two or more independent variables. · Perfect Multicollinearity means one explanatory variable is an exact linear function of one or more others (e.g., X2=2X1+5). · Mathematical Result: OLS requires calculating (X′X)−1, the inverse of the matrix of sums of squares and cross-products of the regressors. Perfect multicollinearity makes the X′X matrix singular (its determinant is zero), meaning its inverse (X′X)−1 does not exist. Without this inverse, the OLS estimators (β^=(X′X)−1X′y) cannot be computed or are undefined.
Lacquers used in cans for sulphur containing vegetables and meat is:
M.S. Swaminathan was an Indian:
The aseptic packaging's sealing is referred to as
Which of the following sentence is INCORRECT with respect to storage temperature?
Invisible fat is present in ______.
Statement 1: There will be a shift of demand snacks, convenience food and organic and diet food. Statement 2: High taxation is a constraint for the food...
The catalytic efficiency of two different enzymes can be compared by the:
Toddy from coconut is prepared by:
The alcohol (Ethanol) is used for the precipitation of
As pergillus niger is used generally for the production of
