Useful tips for everyday
What conditions must the sample size satisfy to make a chi-square test valid? The Chi-square test statistics can be used only it the following conditions…
What is a statistical adjustment? Statistical adjustment is a ubiquitous practice in all quantitative fields that is meant to correct for improprieties or limitations in…
How are LSMEANS calculated? computed by summing all the data points and dividing by the total # of points. They are also referred to as…
What is regression analysis in qualitative research? Regression analysis is a quantitative research method which is used when the study involves modelling and analysing several…
How are attributes selected in neural network? chosen using contribution analysis. chosen using the wrapper method. using the wrapper method. All three attribute selection methods…
What is singularity in logistic regression? In regression analysis , singularity is the extreme form of multicollinearity – when a perfect linear relationship exists between…
How do you Winsorize an outlier? A Basic Method to Winsorize by Hand Analyze your data to make sure the outlier isn’t a result of…
How do you reject the null hypothesis in sign testing? This table shows the value of Z statistic and the probability value. Based on this…
Is negative skewness bad? A negative skew is generally not good, because it highlights the risk of left tail events or what are sometimes referred…
What reliability statistics can be used with categorical variables? The Yule’s Q statistic, based on the odds ratio, is recommended as the reliability statistic of…