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Worked example video where we are asked to find a two-way table of column relative frequencies.

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The slope of a line is rise over run. Learn how to calculate the slope of the line in a graph by finding the change in y and the change in x.

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To calculate the slope of a line you need only two points from that line, (x1, y1) and (x2, y2). The equation used to calculate the slope from two points is: On a graph, this can be represented as: There are three steps in calculating the slope of a straightline when you are not given its equation.

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Notice that the line with the greater slope is the steeper of the two. The greater the slope, the steeper the line. Keep in mind, you can only make this comparison between lines on a graph if: (1) both lines are drawn on the same set of axes, or (2) lines are drawn on different graphs (i.e., using different sets of axes) where both graphs have the same scale.

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Subtract from totals

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Reverse Table- Finding Numbers through Percents

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Segmented bar graph- no number goes over 100. It is broken up into different parts. The x axis is in the same row as the 100% total.

What does it mean for a line to have a good fit?- This means the shows about the average. It should show outliers,

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Positive Association- Positive Slope
Negative Association- Negative Slope
Non-Linear Association- Non-Linear Line, so a line is curved or something like that.
No Association

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What does it mean for a line to have a good fit?

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What does it mean for a line to have a good fit?

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How often something happens divided by all outcomes, then put in as a percent.
ex. Out of 22 kids, 7 like to break dance 7/22 = .318 X 100 = 31%