Useful tips for everyday
How do caterpillars protect themselves? Animals have some unusual ways to defend themselves against enemies. While many rely on nasty stings and dangerous venoms, the…
Can you use z score for Ttest? I have conducted a t-test and found a significant difference on my raw data. However i have standardized…
What is the nonparametric equivalent to the parametric hypothesis test for the one-sample t-test? Wilcoxon Signed-Rank test The Wilcoxon Signed-Rank test is a nonparametric equivalent…
How do you find the deviation of a linear regression? STDEV. S(errors) = (SQRT(1 minus R-squared)) x STDEV. S(Y). So, if you know the standard…
What is the difference between logistic regression and the probit model? The logit model assumes a logistic distribution of errors, and the probit model assumes…
How do you find the difference-in-differences? The difference in difference (or “double difference”) estimator is defined as the difference in average outcome in the treatment…
Is cointegrated stationary? Unit Roots and Cointegrated Series. Definition: If there exists a stationary linear combination of nonstationary random variables, the variables combined are said…
How to interpret clusters based on decision tree? Based on decision tree, we can interpret the clusters as follows Cluster 1 — Customer with low…
What does it mean to make a Type II error for this test? A type II error is a statistical term used within the context…
What does linear by linear association mean in SPSS? SPSS shows a significant linear-by-linear association (p=. 008) showing that there is a significant association between…