Useful tips for everyday
What is the impulse response function of Var? The impulse response function of VAR is to analysis dynamic affects of the system when the model…
How does LSA describe topics? Latent Semantic Analysis is an efficient way of analysing the text and finding the hidden topics by understanding the context…
How are similarity measures used in clustering algorithms? Clustering is done based on a similarity measure to group similar data objects together. This similarity measure…
Is it possible to get 100% forecast accuracy? Try it free for 14 days. The sheer number of variables that go into forecasting demand means…
What is the relationship between correlation and causation quizlet? Correlation indicates the the two numbers are related in some way. Causation requires more proof that…
Is education continuous variable? However, educational attainment is not a discrete variable but a continuous one, and the aggregation into different groups may result in…
How do you calculate percent drop rate? When calculating a drop rate, divide the number of times you have gotten the certain item, by the…
What does taking the logarithm of a variable indicate? I know that the normal distribution basically means the mean, but what does taking the logarithm…
What is Hosmer and Lemeshow goodness of fit test? The Hosmer–Lemeshow test is a statistical test for goodness of fit for logistic regression models. It…
What is standard deviation in histogram? The definition of standard deviation is the square root of the variance, defined as. 1NN∑i=0(x−ˉx)2. with ˉx the mean…