Useful tips for everyday
How many points is a percent? What are Basis Points (BPS)? Percentage Basis Points 0.01% 1 0.1% 10 0.5% 50 1% 100 How do you…
What is a case-control study in statistics? A case-control study is a retrospective study that looks back in time to find the relative risk between…
What is extrinsic and intrinsic evaluation? In an intrinsic evaluation, quality of NLP systems outputs is evaluated against pre-determined ground truth (reference text) whereas an…
What does effect coding mean? Effect coding provides one way of using categorical predictor variables in various kinds of estimation models (see also dummy coding),…
What does Communalities mean in factor analysis? Communalities indicate the amount of variance in each variable that is accounted for. Initial communalities are estimates of…
Is GMM hard or soft clustering? At its simplest, GMM is also a type of clustering algorithm. As its name implies, each cluster is modelled…
How is normal distribution discovered? The normal approximation to the binomial distribution for 12 coin flips. The smooth curve is the normal distribution. This same…
What does it mean to multiply a vector by a matrix? Let us define the multiplication between a matrix A and a vector x in…
Which t-test is primarily used for the comparison of the same sample tested at different times? dependent-samples t test The dependent-samples t test (sometimes called…
How do you deal with NA in categorical data? How to handle missing values of categorical variables? Ignore these observations. Replace with general average. Replace…