Useful tips for everyday
What can principal component analysis do? Principal component analysis (PCA) is a technique for reducing the dimensionality of such datasets, increasing interpretability but at the…
What is a good coefficient of variation value? Definition of CV: The coefficient of variation (CV) is the standard deviation divided by the mean. It…
What is a weekly chart? A weekly chart is the data series of price actions for a traded security. On a weekly chart, each candle,…
When would you use a GARCH model? GARCH is a statistical model that can be used to analyze a number of different types of financial…
What is the same meaning of constant? : something invariable or unchanging: such as. a : a number that has a fixed value in a…
How do you scale a random variable? In general, scaling a distribution means multiplying all values within that distribution by the same constant. We can…
How to calculate the mean of a beta distribution? On Wikipedia for example, you can find the following formulas for mean and variance of a…
How do you find the Pearson correlation coefficient in pandas? corr() is used to find the pairwise correlation of all columns in the dataframe. Any…
Which is the best cumulative link model to use? Cumulative link models are a different approach to analyzing ordinal data. Models can be chosen to…
What is the MLE of normal distribution? “A method of estimating the parameters of a distribution by maximizing a likelihood function, so that under the…