In an Effort to Decide If There Is an Association

question 118

Essay

In an effort to decide if there is an association between the year of a postal increase and the new postal rate for first class mail, the data were gathered from the United States Postal Service. In 1981, the United States Postal Service changed their rates on March 22 and November 1. This information is shown in the table below.

$\begin{array}{|c|c|}\hline \text {Year} & \text {Rate} \\\hline 1971 & 0.08 \\\hline 1974 & 0.10 \\\hline 1975 & 0.13 \\\hline 1978 & 0.15 \\\hline 1981 & 0.18 \\\hline 1981 & 0.20 \\\hline 1985 & 0.22 \\\hline 1988 & 0.25 \\\hline 1991 & 0.29 \\\hline 1995 & 0.32 \\\hline\end{array}$

-Make a scatterplot and describe the association between the year and the first class postal rate.

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Definitions:

NAALC

The North American Agreement on Labor Cooperation, a supplementary agreement to NAFTA aimed at improving labor standards and working conditions in Canada, Mexico, and the United States.

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EU's Charter

The Charter of Fundamental Rights of the European Union, a document that consolidates the range of civil, political, economic, and social rights of European citizens.

Worker's Rights

The set of legal protections and entitlements for workers, including fair wages, safe working conditions, and the freedom to unionize.