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46 articles found
Statistics
Nonparametric statistical methods are among the important methodologies that play a powerful role in data analysis. They can be useful when it is difficult to make assumptions abou
Statistics
Many statistical techniques are used in data analysis, and the t-test is a prominent method frequently used in data analysis and research to test differences between two groups. Th
Statistics
The coupon collector’s problem asks how many random draws it takes, on average, to collect every type at least once. Learn how the average is calculated, what the numbers look like
Statistics
The friendship paradox is the phenomenon in which most people's friends have, on average, more friends than they do. This article explains why it happens with a simple calculation,
Statistics
The base rate fallacy is judging from vivid case details while ignoring how common an event usually is. This piece covers Kahneman and Tversky’s research, the cab problem, everyday
Statistics
The Will Rogers phenomenon is when moving some members from one group to another raises the averages of both groups. This article covers where the name came from and how it works,
Statistics
If a coin lands heads five times in a row, will the next toss be tails? This article explains the gambler's fallacy, the belief that past results change what comes next, along with
Statistics
Simpson's paradox is the phenomenon in which a relationship seen within separate groups weakens or even reverses when the groups are combined. This article covers its definition, w
Statistics
Why is it so likely that two people in a small group share a birthday? This article covers the birthday paradox, the two keys to calculating it, why our intuition misses it, and ho
Statistics
Analysis of variance (ANOVA, Analysis of Variance) is one of the essential analytical techniques in statistics and is widely used across many fields. By testing differences in the
Statistics
Why do conclusions drawn only from what survived so often mislead us? This article explains survivorship bias: what it is and how it arises, the story of the World War II bombers,
Statistics
A scale assigns numbers to the attributes of people or objects so they can be expressed statistically. This article explains the four types of scales widely used in sociology, psyc
