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A time series is a serially sequenced set of values representing a variable’s value or state at different points in time. Time series analysis is a family of statistical methods designed to analyze or model time series data. The term time series analysis is sometimes used in the general sense to refer to any statistical technique that is designed to analyze data with repeated measures over time. However, it is often distinguished from repeated measures techniques like repeated measures ANOVA (analysis of variance) or longitudinal hierarchical linear modeling in which there are typically only a few waves of data over time across a number of independent cases such that the technique simultaneously deals with both between-case variance and within-case variance. In the more restricted use ...

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