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GRAPHING and MATH Review

GRAPHING and MATH Review. Bar Graphs are used to compare categories of items. Line graphs are used to look at changes that occur over time. Pie charts are used to show parts of a whole, or percentages that add to 100%. Steps to creating a graph.

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GRAPHING and MATH Review

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  1. GRAPHING and MATH Review

  2. Bar Graphs are used to compare categories of items

  3. Line graphs are used to look at changes that occur over time.

  4. Pie charts are used to show parts of a whole, or percentages that add to 100%

  5. Steps to creating a graph First, and most important decide what type of graph is needed.

  6. Step 2: Draw the X and the Y axis. (use a ruler!)Step 3: Label the axes with the variable/s to be plottedStep 4: Create a scale for the X and Y axis

  7. Hint: When creating a scale, look at the largest data point, and be sure you space evenly

  8. Step 5: Plot the data and if necessary draw a line of best fitStep 6: Create a key (if needed)Step 7: Create a title using information from the X and Y axis

  9. Accuracy: This is how close to the exact value the measurement is. • Precision: This is how close a group of measurements are to one another. Accuracy and Precision

  10. Significant figures refers to the number of digits in a measurement that are important. Every measurement is written with the exact digits measured plus one extra digit at the end that is estimated. • Example… 34.56 • 3, 4, and 5 are exact measurements and 6 is an estimate. Significant Figures

  11. Rule #1: All nonzero numbers are significant • Rule #2: Any zero that is before a nonzero is NOT significant Ex. .002 these are not sig! • Rule #3: Any zero after a nonzero is significant only if there is a decimal Ex. 100. these are sig! • Rule #4: With scientific notation, only the numbers before X10 are significant Rules for Significant Figures

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