Useful tips for everyday
What is standardized effect size? A standardized effect size is a unitless measure of effect size. The most common measure of standardized effect size is…
How do you handle gaps in time series data? A powerful approach to filling gaps in time series is Optimal Interpolation. This method is also…
How do you find the probability of a percentile? The percentile of a distribution, denoted as xpercent, is defined as the value of x such…
How do you calculate net reclassification improvement? Net reclassification indices and other measures of the prediction increment NRI = P(up|event)−P(down|event) + P(down|nonevent)−P(up|nonevent) (1) NRIe =…
Which test is used when sample size is 30? z-test The z-test is also a hypothesis test in which the z-statistic follows a normal distribution.…
How to calculate synchrony between time series data? To calculate phase synchrony, we need to extract the phase of the signal which can be done…
What is sigma2 in Sarimax? The sigma2 output in the coefficients table is the estimate of the variance of the error term. What is seasonal…
How do you evaluate machine learning algorithms? Test Harness Performance Measure. The performance measure is the way you want to evaluate a solution to the…
Does OLS assume normality? The Assumption of Normality of Errors (OLS Assumption 6) – If error terms are not normal, then the standard errors of…
What if my dependent variable is not normally distributed? In short, when a dependent variable is not distributed normally, linear regression remains a statistically sound…