(A)Is This Time Series Random? Perform a Runs Test and Compute

question 23

Essay

(A)Is this time series random? Perform a runs test and compute a few autocorrelations to support your answer.
(B)Does a linear trend appear to fit these data well? If so,estimate the linear-trend model for this time series,and interpret the value.
(C)Is there evidence of some seasonal pattern in these sales data? If so,characterize the seasonal pattern,and explain how to forecast future values.

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Definitions:

1923

The year notable for several significant global events, including the establishment of the Turkish Republic following the dissolution of the Ottoman Empire and the Great Kanto earthquake in Japan.

United States Constitution

The supreme law of the United States, establishing the framework of the national government and the rights of citizens.

Environmental Acts

Laws and regulations enacted by governments to protect the environment, control pollution, and conserve natural resources.

Pollution

The introduction of contaminants into the natural environment that cause adverse change, affecting air, water, and land.