Useful tips for everyday
Why is multinomial Naive Bayes better? Naive Bayes classifier is used in Text Classification, Spam filtering and Sentiment Analysis. It has a higher success rate…
How can we compute the distance between two matrices if the matrix dimensions do not match? You just take the m rows of P, place…
How do you find the correlation when given X and Y? How to Calculate a Correlation Find the mean of all the x-values. Find the…
What is the difference between fixed effects and clustering? Cluster-adjusted standard error take into account standard error but leave your point estimates unchanged (standard error…
Which is not included in the stratified Cox model? The “stratified Cox model” is a modification of the Cox proportional hazards (PH) model that allows…
What is the most accurate measure of variability? The standard deviation The standard deviation is the most commonly used and the most important measure of…
What is a 3 way analysis? A three-way ANOVA tests which of three separate variables have an effect on an outcome, and the relationship between…
What is the relationship between chi-square and t test? The t-test allows you to say either “we can reject the null hypothesis of equal means…
Are uncorrelated RVS also independent? Independent random variables are uncorrelated, but uncorrelated random variables are not always independent. In mathematical terms, we conclude that independence…
Is the process ARMA 0 0 stationary? θj j=0,. . . ,q 0 j=q+1,q+2,. . . with θ0 = 1. < ∞ so a moving…