Useful tips for everyday
How do you measure predictive power? To gauge the predictive capability of the model, we could use it to predict the energy use of building…
How do you solve factor analysis? First go to Analyze – Dimension Reduction – Factor. Move all the observed variables over the Variables: box to…
How do we measure the strength of a linear relationship? The correlation r measures the strength of the linear relationship between two quantitative variables. Pearson…
What is the probability of flipping two coins and having them come up the same? The probability of getting heads on the toss of a…
How do you find the expected number of failures? Times the 1,000 units and we would expect 31.94 or 32 failures over the 6 months.…
What do large coefficients mean? In the regularisation context a “large” coefficient means that the estimate’s magnitude is larger than it would have been, if…
Can a hypothesis be tested more than once? Multiple testing refers to any instance that involves the simultaneous testing of more than one hypothesis. If…
How can I tell if a model fits my data? In general, a model fits the data well if the differences between the observed values…
Are 3D scatter plots useful? The 3D scatter plot displays trivariate points plotted in an X-Y-Z grid. It is particularly useful for investigating the relationships…
What are the sources of temperature? Temperature is a physical quantity that expresses hot and cold. It is the manifestation of thermal energy, present in…