Useful tips for everyday
What is the Diebold Mariano test? In particular, they proposed to test the null hypothesis that the forecast errors coming from the two forecasts bring…
When do you use a posterior normal distribution? When a prior dataset can be roughly represented by a normal distribution, bayesian statistics show that sample…
What is J test statistics? The test statistic is the sum of weighted square deviations of the sample moments evaluated at the GMM estimates, and…
How to decomposition squared error loss into bias and variance? To get started with the squared error loss decomposition into bias and variance, let use…
How can the FTIR technique be used for quantitative analysis? Yes FTIR can be used for quantitative analysis of medicines by comparison of sample peaks…
Does endogeneity imply heteroscedasticity? No, not at all. Endogeneity is a first-moment problem, while heteroskedasticity is a second-moment problem. would imply Var(ui|xi)=σ2. What is heteroskedasticity…
What is the intercept in Glmer? The intercept is the predicted value of the dependent variable when all the independent variables are 0. What is…
When are two random variables x and Y independent? Two random variables X and Y are independent if any pair of events of the form…
How to determine the Order of an ARIMA model? Identifying the order of differencing in an ARIMA model Identifying the numbers of AR or MA…
How is the cost function represented in Logistic Regression? The cost function used in Logistic Regression is Log Loss. What is the derivative of the…