Useful tips for everyday
What does it mean if a variable has zero variance? A variance value of zero, though, indicates that all values within a set of numbers…
How are Markov chain Monte Carlo methods used in statistics? e In statistics, Markov chain Monte Carlo (MCMC) methods comprise a class of algorithms for…
How to calculate the variance of the ratio of random variables? The ratio of two random variables does not in general have a well-defined variance,…
What is the difference between analysis of variance and regression analysis? In the analysis of variance the response is continuous but belongs to a few…
How do you handle missing variables? Best techniques to handle missing data Use deletion methods to eliminate missing data. The deletion methods only work for…
How do you find moments with skewness? In mean moments, the deviations are taken from the mean. observation from the sample average (arithmetic mean), which…
Is birthday paradox true? In a room of just 23 people there’s a 50-50 chance of at least two people having the same birthday. The…
Can the null hypothesis be less than or equal to? The actual test begins by considering two hypotheses. They are called the null hypothesis and…
What is the kernel of normal distribution? From Wikipedia , The kernel of a probability density function (pdf) or probability mass function (pmf) is the…
What does biased mean in math? more A systematic (built-in) error which makes all values wrong by a certain amount. Example: You always measure your…