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Graphical Analysis

Graphical Analysis. Data. Data collected is plotted on a graph with independent variable on x-axis and dependent variable on the y-axis. Are the calories related to the amount of fat?. Total Cal. Total Fat. Regression Line. Line that “best fits” the data is drawn through the points

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Graphical Analysis

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  1. Graphical Analysis

  2. Data • Data collected is plotted on a graph with independent variable on x-axis and dependent variable on the y-axis

  3. Are the calories related to the amount of fat?

  4. Total Cal Total Fat

  5. Regression Line • Line that “best fits” the data is drawn through the points • This line can be represented by an equation for the line

  6. Types of Regressions • Linear – straight line y = ax + b a = slope b = y intercept • Power – curve y = axb • Sinusoidal – wave y = a sin(bx + c)

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