Useful tips for everyday
Which is the best fit for Generalized Additive Models? Generalized additive models are very flexible, and provide excellent fit for both linear and nonlinear relationships…
What is a permutation sample? A permutation sample is the same size as the original data set and is made by permuting/shuffling one or more…
How do you find the joint probability density function? From the joint PDF, we find that RXY={(x,y)∈R2|0≤y≤x≤1}…. Find RXY and show it in the x−y…
What is the third variable problem in correlational research? the fact that an observed correlation between two variables may be due to the common correlation…
What is the correct formula for the linear regression equation? The Linear Regression Equation The equation has the form Y= a + bX, where Y…
How is the exogenous variable used in time series? In time series, the exogenous variable is a parallel time series that are not modeled directly…
What is the connection set between a latent variable and a manifest variable? A manifest variable is a variable or factor that can be directly…
Why the covariance matrix is important for analysis? So, covariance matrices are very useful: they provide an estimate of the variance in individual random variables…
Are robust standard errors always larger? Robust standard errors are useful in social sciences where the structure of variation is unknown, but usually shunned in…
Is p constant in binomial distribution? 1. independent – the result of one trial does not affect the result of another trial. 2. repeated –…