Statistics MCQs, Analysis, Software
Introduction to Statistical Inference Inference means conclusion. When we discuss statistical inference, it is the branch of Statistics that deals with the methods to make conclusions (inferences) about a population (called reference population or target population), based on sample information. The statistical inference is also …
Introduction to Multiple Regression Analysis Francis Galton (a biometrician) examines the relationship between fathers’ and sons’ height. He analyzed the similarities between the parent and child generation of 700 sweet peas. Galton found that the offspring of tall parents tended to be shorter and offspring …
Introduction to Geometric Mean The geometric mean (GM) is a way of calculating an average, but instead of adding values like the regular (arithmetic) mean, it multiplies them and then takes a root. The geometric mean is defined as the $n$th root of the product …
Introduction to Weighted Averages The multipliers or sets of numbers that express more or less relative importance of various observations (data points) in a data set are called weights. The weighted arithmetic mean (simply called weighted average or weighted mean) is similar to an ordinary arithmetic mean except that …