Scatter Plots and Trend Lines November 1, 2011
OBJECTIVE: SWBAT DISCUSS TRENDS AND TREND LINES; IDENTIFY SCATTER PLOTS
Today we learned about scatter plots, trends and trend lines. Scatter plots and trend lines are like correlations. Correlations are how things are related to each other. Scatter plot is a graph of scattered points and trend line is drawing a line in the middle of all the scattered points. Basically, you want to include as most of the dots as possible. To know if the trend line is positive, the change in y and the change in x is either both positive or both negative. The trend line is negative if the change in y is positive and the change in x is negative. An example is shown below.
EXAMPLE:
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