Useful tips for everyday
What are the parameters of the Weibull distribution? Calculating Weibull Parameters There are three standard parameters for the Weibull distribution: Location, Scale, and Shape. The…
How does N affect sampling distribution? The central limit theorem tells us that no matter what the distribution of the population is, the shape of…
What is the probability of a type I error? Type 1 errors have a probability of “α” correlated to the level of confidence that you…
How do you find the seasonal effect? the seasonally adjusted series = T + C + I. The overall seasonal effect for each quarter is…
Which is the best way to test for autocorrelation? The easiest way to assess if there is dependency is by producing a scatterplot of the…
How to build a model with categorical variables? We want to build a model of the form: yi =βxi +α y i = β x…
How to get the Kalman filter and maximum likelihood? The statsmodels ARMA class has a fit () method for fitting the ARMA model: This results…
What is relative squared error? The relative squared error (RSE) is relative to what it would have been if a simple predictor had been used.…
How can I learn EDA? Some of the key steps in EDA are identifying the features, a number of observations, checking for null values or…
How do you calculate sample size for non-inferiority trials? The sample size required for a non-inferiority clinical trial can be calculated using the formula in…