Useful tips for everyday
What is a second order statistic? First and Second Order Statistics The second order statistic x(2) is the next smallest value. In the same sample,…
What is PCA and cluster analysis? Cluster analysis groups observations while PCA groups variables rather than observations. PCA can be used as a final method…
How do you measure scale reliability? Test-retest reliability is a measure of consistency between two measurements (tests) of the same construct administered to the same…
Which is the formula for the chi square distribution? The chi-square distribution results when ν independent variables with standard normal distributions are squared and summed.…
How do you calculate variability of data? Measures of Variability: Variance Find the mean of the data set. Subtract the mean from each value in…
What happens if you select the wrong distribution? If you select the wrong distribution, your calculations against the specifications will not accurately reflect what the…
Where is my nearest neighbor in Knn? How does K-NN work? Step-1: Select the number K of the neighbors. Step-2: Calculate the Euclidean distance of…
When to use effect coding vs dummy coding? Unlike dummy coding, effect coding allows you to assign different weights the various levels of the categorical…
What is UniFrac distance? The unique fraction metric, or UniFrac, measures the phylogenetic distance between sets of taxa in a phylogenetic tree as the fraction…
What are the different types of machine learning models? Let’s dive into it. Fundamental Segmentation of Machine Learning Models. All machine learning models are categorized…