Useful tips for everyday
Can sommeliers actually tell the difference? In a wine tasting experiment using 400 participants, Wiseman found that general members of the public were unable to…
What is Anova formula? The Anova test is performed by comparing two types of variation, the variation between the sample means, as well as the…
What is the difference between a dependent and independent samples t-test? Dependent samples are paired measurements for one set of items. Independent samples are measurements…
How is SVD used in PCA? Machine Learning — Singular Value Decomposition (SVD) & Principal Component Analysis (PCA) In machine learning (ML), some of the…
How do you find the relationship between two quantitative variables? A scatterplot shows the relationship between two quantitative variables measured for the same individuals. The…
What is an acceptable correlation coefficient? Understanding Correlation. The range of values for the correlation coefficient is -1.0 to 1.0. In other words, the values…
What do you mean by decomposition in forecasting? Decomposition is a forecasting technique that separates or decomposes historical data into different components and uses them…
How to calculate the confidence level in logistic regression? Logistic regression equation: Log(P/(1-P)) = β0 + β1×X, where P = Pr(Y = 1|X) and X…
How do you compare observed and expected frequencies? Now we can use the chi-square test to compare the observed and expected frequencies. The chi-square test…
How do you use the multiplication rule for probability? Multiplication Rule in Probability If A and B are two independent events in a probability experiment,…