Graphing.

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Presentation transcript:

Graphing

Reminders and Updates The first lab is THIS week and is due by Friday; see syllabus for complete details. Syllabus has been further updated.

Things you need to know… Plotting individual points (x, y) Regression line (best fit line) Slope, m = Δy/Δx = (y2-y1)/(x2-x1) (include units) y-intercept, b (include units) Algebraic relationship: y = mx + b Physical relationship: replace y by variable on y-axis and x by variable on x-axis Relationships – proportional, linear, inverse, etc

Things you must be able to do… Plot data points on a graph or read coordinates of a plotted point. Determine and interpret the slope of a straight-line graph, including units. Determine the y-intercept, including units. Find a physical relationship using y=mx+b Determine the value of a dependent variable given the value of an independent variable as well as appropriate constants.

Introduction to Graphical Analysis Using either Vernier’s Graphical Analysis or Vernier’s Logger Pro A demonstration…

Example #1

Example #2

Readings Be certain to read and complete “Graphing Exercises” hyperlinked to course syllabus for today. Remember that readings about “Graphing” in Student Lab Handbook are required.