Unit 3, Lesson 9
What’s the Correlation?
Extra Support Materials for Algebra 1
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For each pair of graphs, the linear model fits the data about the same. What do you notice about the variables? How might the variables be related?
the number of cows in some states and the number of chickens in those same states
the number of cows in some states and the number of farms in those same states
Horizontal axis, number of cows in thousands, 0 to 6,000, by 1,000's. Vertical axis, number of chickens in thousands, 0 to 14,000, by 1,000's. Scatter plot and line of best fit drawn. As number of cows increases, number of chickens increases.
Horizontal axis, number of cows in thousands, 0 to 6,000, by 1,000's. Vertical axis, number of farms in thousands, 0 to 100, by 5's. Scatter plot and line of best fit drawn. As number of cows increases, number of farms increases.
the worth of a person’s house and the worth of that same person’s car
the worth of a person's car and their income