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.
The feeding intensity of fish determined by calculating gastro-somatic index is equal to
Which of the following spore forming bacteria may lead to overcooked and degraded canned food?
What must be declared on every food package?
Agricultural Produce (Grading and Marketing) Act (1937) is also:
The skin of vegetable are removed by
The membrane lipid hypothesis was given by:
When drying a product, more surface area means……..drying  Â
Food processing in India is concentrated in which sectos?
Which instrument measures calories:
One kilocalorie equals:
