Oil Quality and Price Quality of oil is measured in API gravity degrees--the higher the degrees API, the higher the quality. The table shown below is produced by an expert in the field who believes that there is a relationship between quality and price per barrel. 
A partial Minitab output follows: 
{Oil Quality and Price Narrative} Plot the least squares regression line on the scatter diagram.
Definitions:
Events
Occurrences or outcomes that can be observed and are often of interest in probability and statistics.
No Clubs
The absence of formal groups or organizations within a specified context, often referring to schools or communities.
Probability
A measure of the likelihood that an event will occur, quantified as a number between 0 and 1.
Cards
Pieces of heavy paper or thin cardboard, often rectangular, used for writing, playing games, or as a tool for various statistical teaching methods.
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