A Correlation of Zero Between Two Quantitative Variables Means That

question 30

Multiple Choice

A correlation of zero between two quantitative variables means that

• A) we have done something wrong in our calculation of r.
• B) there is no association between the two variables.
• C) there is no linear association between the two variables.
• D) re-expressing the data will guarantee a linear association between the two variables.
• E) none of the above

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Definitions:

Histogram

A graphical representation of the distribution of numerical data, where the data is grouped into ranges and each range corresponds to a vertical bar.

Stemplots

A graphical representation of data used to display its shape and distribution, by separating each data value into a stem and a leaf.

Home Runs

In baseball, a hit that allows the batter to circle all the bases, reaching home safely in one play without any errors being committed by the defensive team.

Stemplots

A graphical representation of data that displays actual numbers as stems and leaves, helping to visualize the shape of a distribution.