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In a study of whether a relationship exists between a child’s aptitude and the age at...
In a study of whether a relationship exists between a child’s aptitude and the age at which he/she first speaks, researchers collected a random sample of 150 children and recorded the age (in months) of a child’s first speech (x variable) and the child’s score on an aptitude test (y-variable) The data were then used to create a regression equation in which the slope was calculated to be -1.25 and the y-intercept was calculated to be 109. What would you predict the aptitude score to be of a child who first spoke at 24 months?
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