Examlex
A probability sampling method in which we randomly select one of the first k elements and then select every kth element thereafter is _____.
Trend
A general direction in which something is developing or changing over time.
Moving Average
A statistical measure to smooth out short-term fluctuations and highlight longer-term trends or cycles in data.
Exponential Smoothing
A technique used in time series forecasting that applies decreasing weights to past data, giving more importance to more recent observations.
Stationary Time Series
A type of time series data where statistical properties such as mean and variance are constant over time.
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