Useful tips for everyday
Which is an example of an overfitting model? To put that another way, in the case of an overfitting model it will often show extremely…
What do you report in a multiple regression to say whether your model was significant or not? Second, you need to report whether or not…
Can you calculate relative risk from odds ratio? Odds ratios (OR) are commonly reported in the medical literature as the measure of association between exposure…
What are the factors to be considered when comparing classification methods? The factors considered in their study include (1) size of the training set, (2)…
What is the difference between Pearson correlation and t-test? Pearson’s correlation coefficient (r) is used to demonstrate whether two variables are correlated or related to…
When to use gradient descent in an optimization algorithm? Gradient descent is best used when the parameters cannot be calculated analytically (e.g. using linear algebra)…
How are inputs related to predictions in machine learning? This means that the input row at index 0 matches the prediction at index 0; the…
How do you select analysis method? The tool of data analysis depends on the type of data you have and what you want to achieve…
What is stationarity test in time series? Stationarity is an important concept in time series analysis. Stationarity means that the statistical properties of a a…
Is Alpha testing done by customers? Alpha testing is performed by testers who are usually internal employees of the organization. Beta testing is performed by…