If All the Points in a Scatter Diagram Lie on the Least

question 28

Short Answer

If all the points in a scatter diagram lie on the least squares regression line, then the coefficient of correlation must be: $\begin{array}{|l|l|}\hline A&\text {1.0 }\\\hline B&\text { -1.0}\\\hline C&\text { either } 1.0 \text { or }-1.0\\\hline D&\text { 0.0 }\\\hline \end{array}$

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Definitions:

Carboxylic Acid Derivative

Compounds obtained by substituting the hydroxyl group in carboxylic acids with other functional groups like halides, amides, or esters.

β-Hydroxybutyronitrile

An organic compound featuring a hydroxyl group (–OH) and a nitrile group (–CN) on a four-carbon chain, positioned beta (β) to each other.

Boiling Point

The temperature at which the vapor pressure of a liquid equals the external pressure surrounding the liquid, causing it to turn into vapor.

Acetic Acid

A weak organic acid with the formula CH3COOH, known for being the main component of vinegar.