Useful tips for everyday
What does a small p-value mean in R? P values tell you whether your hypothesis test results are statistically significant. High P-values: Your sample results…
What are the advantages of machine learning system? Machine learning is a form of data analysis that automates analytical model building. Using algorithms that continuously…
Why are residual plots good for regression model validation? As seen in Figure 3b, we end up with a normally distributed curve; satisfying the assumption…
Which probability is more likely? The higher the probability number or percentage of an event, the more likely is it that the event will occur.…
How do you randomly select cases in SPSS? Exactly. From the menus choose: Data > Select Cases… Select Random sample of cases. Click Sample. Select…
Are random effects unbiased? Unbiasedness. In general, random effects are efficient, and should be used (over fixed effects) if the assumptions underlying them are believed…
How do you calculate unbiased point estimate? Bias: The difference between the expected value of the estimator and the true value of θ, i.e. When…
Why is data sparsity bad for collaborative filtering recommendations? Data sparsity As a result, the user-item matrix used for collaborative filtering could be extremely large…
Can you average Likert scores? The mean in a Likert scale can’t be found because you don’t know the “distance” between the data items. In…
Can you do an ANOVA with a binary variable? When the outcomes are binary or count data, the assumptions of normality and equal variances are…