Standard Deviation

Pronunciation: /ˈstændərd dɪˌveɪʃən/

Definitions of standard deviation

noun a statistic that measures the amount of variability or dispersion in a set of data points

Example Sentences

A1 The standard deviation measures the amount of variation or dispersion of a set of values.

A2 In statistics, the standard deviation is a commonly used measure of the amount of variation or dispersion in a set of data.

B1 When analyzing data, it is important to consider the standard deviation to understand how spread out the values are from the mean.

B2 Researchers use standard deviation to determine the consistency or variability of data points within a dataset.

C1 Advanced statistical models take into account not only the mean but also the standard deviation to make more accurate predictions.

C2 In financial analysis, standard deviation is used to measure the risk associated with an investment by analyzing the volatility of its returns.

Examples of standard deviation in a Sentence

formal The standard deviation is a measure of the amount of variation or dispersion of a set of values.

informal The standard deviation tells us how spread out the numbers in a data set are.

slang The standard deviation is like the average distance of numbers from the mean.

figurative Think of standard deviation as a way to see how much the data points deviate from the average.

Grammatical Forms of standard deviation

• plural: standard deviations
• present tense: standard deviation
• future tense: will standard deviation
• perfect tense: has standard deviation
• continuous tense: is standard deviation
• singular: standard deviation
• positive degree: standard deviation
• infinitive: to standard deviation
• gerund: standard deviating
• participle: standard deviated

Origin and Evolution of standard deviation

First Known Use: 1889 year

Language of Origin: English

Story behind the word: The term 'standard deviation' originated from the field of statistics, specifically from the work of Karl Pearson in the late 19th century.

Evolution of the word: Initially used to measure the dispersion of data points around the mean in a dataset, the concept of standard deviation has since become a fundamental tool in statistical analysis and is widely used in various fields including science, economics, and social sciences.