Recent content by valentina89

  1. V

    p-value for logistic regression

    How do I find the p-value for logistic regression. For example , for a glm output I : z -value : 1.32 P ( > | Z | ) = 0.186696 If it were a normal regression would do : 2 ( 1 - P ( < | Z | ) = 2 (1-0.4066) = ??? The t-value = Estimate/ Std.Error...but P(>|t|) i don't understand.
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    Compare the estimated model with the model with intercept-only

    The question is: How do the test to compare the estimated model with the model with intercept-only ? How can I comment on the result ? I think we need to calculate the test F... I read several notes, but I can not understand how I do . The idea is to take Null deviance and Residual Deviance...
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    Find costant that satisfies the variance

    Hi, I have this regression model : Y_i=B_1+B_2logx_i+2e_i e_i~N(0,σ2) I am asked to find the constant : Y∗=y c that satisfies V(Y∗)=σ^2 I have some doubts ... I would say that the constant is equal to 1/2 ?
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    Change regression model ($x^*_i = x_i -10$)

    Hi there.:wave: I'm solving an exercise on multiple linear regression. Near the end I will be asked for the same data as the previous model, it is the maximum likelihood estimates. The previous model: I have the matrix (X'X)^{-1} and the matrix X'y and the model is: Y_i = B_0...
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