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Do Now: Estimate the order of magnitude of the thickness of a pencil line in meters.

Do Now: Estimate the order of magnitude of the thickness of a pencil line in meters. 10 -3. Graphing of Data. Why do we display data with graphs?. G ive graphical data display because:. See relationship btw variables. See outliers from data. Show math relationship. Finding constants.

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Do Now: Estimate the order of magnitude of the thickness of a pencil line in meters.

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  1. Do Now: Estimate the order of magnitude of the thickness of a pencil line in meters. • 10-3.

  2. Graphing of Data • Why do we display data with graphs?

  3. Give graphical data display because: • See relationship btw variables. • See outliers from data. • Show math relationship. • Finding constants.

  4. How to graph • Graph axis independent (x) / dependent (y). Not always. • Scale – large. • Slope points – far apart. • Plot dot circled or dot w/bars. • Line or curve of best fit by hand. Can buy shape to help fit curves. Should touch error bars. • Best fit straight line may or may not pass through origin. • Calculate slope & slop uncertainty for linear.

  5. Graph Analysis • Direct Linear y = mx + b test • Since slope is constant, y/x = k any 2 points

  6. What graph is this? • Y = -kx. • This is a linear graph!

  7. Inverse hyperbolic • Y = k/x yx = k • We make transformation of graph to line by calculating & plotting the function x on the x axis. • Transform graph by plotting y against 1/x to get linear. What would the transformed graph look like?

  8. Intensity ___1___ distance

  9. Parabolic • Y = kx2. y/x2 = k • Transform graph y against x2make it linear • What will the slope be?

  10. Cyclic Graph

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