secular trend, seasonal variation, cyclical variation, and irregular variation
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A pie chart can only have one data series in it. They show how the components make up one unit. The series can have many values in it, but it can only be one series.
The main types of series are time series.
A time series is a sequence of data points, measured typically at successive points in time spaced at uniformed time intervals. Time series analysis comprises methods for analyzing time series data in order to extract meaningful statistics. Regression analysis is a statistical process for estimating the relationship among variables.
how is time series applied in the business world today
yes