Useful tips for everyday
What is post hoc design? A post-hoc study is conducted using data that has already been collected. Using this data, the researcher conducts new analyses…
What is tau in quantile regression? tau. the quantile(s) to be estimated, this is generally a number between 0 and 1, but if specified outside…
Why do we use median instead of mean for income? Median Household Income is a more accurate summary measure of income: Median household income is…
Why should sampling be as random as possible? Random sampling ensures that results obtained from your sample should approximate what would have been obtained if…
What kind of problems can machine learning models solve? As a result, potentially important factors and data are not considered. A machine can consider all…
What are the assumptions for repeated measures Anova? Assumptions for Repeated Measures ANOVA Independent and identically distributed variables (“independent observations”). Normality: the test variables follow…
What purity means? the condition or quality of being pure; freedom from anything that debases, contaminates, pollutes, etc.: the purity of drinking water. freedom from…
What is exclusion restriction? The concept of exclusion restrictions denotes that some of the exogenous variables are not in some of the equations. Often this…
How many responses do I need to be statistically valid? In technical terms, the question of how many responses you need for your survey to…
How to use hierarchical cluster analysis on time series data? Basically, in agglomerative hierarchical clustering, you start out with every data point as its own…