Scatterplots & Data Interpretation Reading Scatterplots Positive correlation: points trend upward (as x increases, y increases) Negative correlation: points trend downward No correlation: no clear pattern Line of Best Fit Approximates the trend Use it for predictions (interpolation within data range) Extrapolation (outside data range) is less reliable SAT Question Types Identify the relationship (positive, negative, or none) Use line of best fit to estimate values Interpret slope and y-intercept in context Identify outliers