A researcher wishes to examine the relationship between number of words a child speaks at age two and their score on the SATS 15 years later. The researcher discovers a linear relationship between the data sets, and the least squares line is: ý = 94+ 153x where x is the number of words a child speaks at age two and y is their score on the SATS 15 years later. The slope of the regression line can be interpreted in the following way: When amount of words spoken at two increases by one word, the SAT score tends to decrease by 153. OWhen amount of words spoken at two increases by one word, the SAT score tends to increase by 153. O When amount of words spoken at two increases by one word, the SAT score tends to decrease by 94. O When amount of words spoken at two increases by one word, the SAT score tends to increase by 94.

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