The etruscans were the group considered to be the 'first' romans.
Answer:
protects their national members' petroleum reserves for their own use
Explanation:
The Organization of Petroleum Exporting Countries (OPEC) <u>protects their national members' petroleum reserves for their own use</u>. The OPEC was established in 1960 and has about 15 member countries presently. The aim of OPEC is to protect the interest of member countries, regulate daily output of oil and hence the global price of oil.
The strength of an association between variables is described by correlation, and it is typically captured by the correlation coefficient.
Its value ranges from-1 to +1. These are perfect positive and perfect negative correlations. Variables moving in the same direction are with positive correlation. And opposite moving variables are with negative correlation. All data points of a perfect correlation which ranges from -1 to +1, lie on a straight line.
The correlation coefficient shows the strength and direction between the two variables.
The most common method of calculating correlation is Pearson product correlation. Pearson correlation measures the linear relationship between two variables.
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