Statistics | Definition, Types, & Importance | Britannica
2024年12月6日 · Statistics, the science of collecting, analyzing, presenting, and interpreting data. Currently the need to turn the large amounts of data available in many applied fields into useful information has stimulated both theoretical and practical developments in statistics.
The modern role of statistics - Encyclopedia Britannica
Despite them, statistics has thrived as a somewhat heterogeneous but powerful set of tools, methods, and forms of expertise that continues to regulate the acquisition and interpretation of quantitative data.
Random variables and probability distributions - Encyclopedia …
2024年12月6日 · Statistics - Random Variables, Probability, Distributions: A random variable is a numerical description of the outcome of a statistical experiment.
Probability and statistics | History, Examples, & Facts | Britannica
2024年12月4日 · Probability and statistics, the branches of mathematics concerned with the laws governing random events, including the collection, analysis, interpretation, and display of numerical data. Learn more about the history of probability and statistics in this article.
Statistics - Residuals, Analysis, Modeling | Britannica
2024年12月6日 · Statistics - Residuals, Analysis, Modeling: The analysis of residuals plays an important role in validating the regression model. If the error term in the regression model satisfies the four assumptions noted earlier, then the model is considered valid.
Percentile | Definition, Quartile, & Facts | Britannica
2024年11月4日 · Some percentiles are commonly given special significance in statistics and data analysis. The 50th percentile is the median, or central value, of a dataset, where half of all data points fall below the value. The median is also called the second quartile.
Statistics - Mean, Median, Mode | Britannica
2024年12月6日 · Statistics - Mean, Median, Mode: A variety of numerical measures are used to summarize data. The proportion, or percentage, of data values in each category is the primary numerical measure for qualitative data.
Statistics - Estimation, Sampling, Probability | Britannica
2024年12月6日 · Statistics - Estimation, Sampling, Probability: It is often of interest to learn about the characteristics of a large group of elements such as individuals, households, buildings, products, parts, customers, and so on. All the elements of interest in a …
statistics - Kids | Britannica Kids | Homework Help
Statistics is a branch of mathematics. It involves gathering information, summarizing it, and deciding what it means. The numbers that result from this work are also called statistics. They can help to predict such things as the weather and how sports teams will perform.
Statistical significance | Definition, History, & Facts | Britannica
2024年11月29日 · Statistical significance, in statistics, the determination that a result or an observation from a set of data is due to intrinsic qualities and not random variance of a sample. An observation is statistically significant if its probability of …
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