correlationA pattern where two quantities tend to change together: both rise, or one falls as the other rises. It does not prove that one causes the other.
You’ll leave with these skills
01Describe the direction, strength, and shape of a scatterplot’s dotsCheck whether the dots rise or fall from left to right and how tightly they cluster around a line.
02Interpret the slope and y-intercept of a line of best fit in the axis unitsSay the slope as the predicted change in y for each increase of 1 in x, and the y-intercept as the predicted y-value when x is zero, using the units on the axes.
03Find how far a point sits above or below the line of best fitPlug the point’s x-value into the line’s equation to get the predicted y-value, then subtract it from the point’s actual y-value.
04Find the line of best fit for a data table in DesmosType the data into a Desmos table and run a linear regression to get the line’s slope and y-intercept.
This lesson is part of the full library
207 lessons that teach every skill the SAT tests
71Math
40Reading
24Grammar
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