The Question Blank 1 of 1 component of a time series captures whether the level of the variable of interest is generally increasing or decreasing over time.
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A time series typically consists of several components: trend, seasonal, cyclical, and irregular (or random) components. Show more…
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Indicate whether each of the following statements describes stationary, nonstationary, random, trending or seasonal series; Explain a) A series that has a trend b) A series whose mean and variance remain constant over time c) A series whose mean value is changing over time: d) Aseries that contains no growth or decline. e) Aseries whose mean value is changing over time: f) The successive values of a time series are not related to each other: g) A significant autocorrelation coefficient appears at time lag 6 for semiannual data: h) The series contains growth or decline over time. i) The autocorrelation coefficients are typically significantly different from zero for the first several lags then gradually toward zero as the number of lags increases j) Asignificant autocorrelation coefficient appears at time lag 4 for quarterly data:
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The austres time series has the following components: A. Increasing trend and random variation B. Increasing linear trend and random variation C. Trend and random variation D. Increasing trend E. Increasing exponential trend and random variation
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