_____ average is used for smoothing a time series? a) moving b)weighte...
Moving Average
Moving average is used for smoothing a time series. It is a commonly used statistical technique that helps to remove the noise from data. It is a simple and effective way to analyze and predict trends in data.
Definition
Moving average is a method of analyzing data points by creating a series of averages of different subsets of the full data set. It is a way to smooth out a time series by calculating the average of a fixed number of data points.
Types of Moving Average
There are two types of moving averages - simple moving average and weighted moving average.
Simple Moving Average
Simple moving average (SMA) is the average of a fixed number of data points. Each data point has an equal weight in calculating the average.
Weighted Moving Average
Weighted moving average (WMA) is the average of a fixed number of data points, but each data point has a different weight. The weights are assigned based on their importance in the analysis.
How Moving Average Works
Moving average works by smoothing out a time series by calculating the average of a fixed number of data points. This helps to remove the noise from the data and makes it easier to identify trends and patterns.
Advantages of Moving Average
- It is a simple and effective way to analyze and predict trends in data.
- It helps to remove the noise from the data and makes it easier to identify trends and patterns.
- It is easy to calculate and interpret.
Disadvantages of Moving Average
- It can be sensitive to outliers.
- It may not be suitable for all types of data.
- It may not work well for short-term fluctuations.
Overall, moving average is a useful technique for smoothing out a time series. It helps to remove the noise from the data and makes it easier to analyze and predict trends. However, it is important to consider its limitations and suitability for different types of data.