Useful tips for everyday
How do you implement a snowball sample? Snowball sampling consists of two steps: Identify potential subjects in the population. Often, only one or two subjects…
How do you find sequential sum of squares? The sequential sum of squares obtained by adding to the model already containing only the predictor is…
What is the order of interpolation? Important! Moving from the first -order to the third and 5th order improves interpolated values to the original function.…
How do you do non-linear regression? Nonlinear regression is a form of regression analysis in which data is fit to a model and then expressed…
What is the expected number of fixed points in a random permutation? So the probability of particular tuple of j values which defines a unique…
What is the five-number summary of the distribution? The five-number summary of a distribution consists of the smallest observation, the first quartile, the median, the…
Can a confidence interval obtained for estimating a population parameter be used to reject the null hypothesis? Suppose that you do a hypothesis test. If…
What are the different trendlines in Excel? When you add a trendline to a chart in Microsoft Excel*, you can choose any of the six…
How do you report effect size in eta squared? The eta squared (η2) is an effect size often reported for an ANOVA F-test. Measures of…
How do you determine order effects? Three basic types of question order effect have been identified: (a) unconditional, in which the answer to a subsequent…