Obtain a Time Series Graph of the Data

question 18

Essay

Obtain a time series graph of the data.If you will be using a moving average model of the data,what information does this graph provide to help specify such a model?

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Definitions:

Confidence Interval

A set of values obtained from sample data, which is expected to encompass the value of an unspecified population parameter.

Margin of Error

A statistic expressing the amount of random sampling error in a survey's results, representing the range within which the true population parameter is likely to lie with a certain degree of confidence.

Variance

A statistical measure that tells us how much a set of numbers is spread out; it's the average of the squared differences from the Mean.

Confidence Interval

A range of values, determined from sample statistics, that is likely to contain the value of an unknown population parameter.