How to draw a graph
- 1. How to draw a graph http://maths4biosciences.com
- 2. Key points to drawing a graph • Make the best use of the graph paper • Use a sharp pencil • Plot your point clearly and add the line • Join the points, or use a line of best fit • Clearly label the axes - don’t forget any units • Give the graph a title
- 3. 100 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9
- 4. 100 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9
- 5. 100 1 2 3 4 5 6 7 8 9 10 0 1 2 3 4 5 6 7 8 9 Don’t forget to give the graph a title x axis - label it (and don’t forget the units) yaxis-labelit(anddon’tforgettheunits)
- 6. Key points to drawing a graph • Make the best use of the graph paper • Use a sharp pencil • Plot your point clearly and add the line • Join the points, or use a line of best fit • Clearly label the axes - don’t forget any units • Give the graph a title
- 7. Worked example You have the data shown in the table How would you plot it on a graph? Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 8. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 9. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 10. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 11. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 12. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 13. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 14. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 15. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844
- 16. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844 Unknown Absorbance (595 nm) Conc. (µg/ml) 1 0.500
- 17. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844 Unknown Absorbance (595 nm) Conc. (µg/ml) 1 0.500
- 18. Concentration (µg/ml) Absorbance (595 nm) 0 0 1 0.054 2 0.130 4 0.225 8 0.410 16 0.844 Unknown Absorbance (595 nm) Conc. (µg/ml) 1 0.500 9.23
- 19. Amount (µgl) Absorbance (595 nm) 0 0 3 0.066 6 0.130 12 0.255 24 0.481 48 0.966 Unknown Absorbance (595 nm) Amount (µg) 1 0.187 2 0.406 3 0.703 4 1.189
- 20. Concentration (µgl) Absorbance (595 nm) 0 0 3 0.066 6 0.130 12 0.255 24 0.481 48 0.966 Unknown Absorbance (595 nm) Amount (µg) 1 0.187 9.0 2 0.406 19.6 3 0.703 33.9 4 1.189 ???
- 22. Summary • Make the best use of the graph paper • Use a sharp pencil • Plot your point clearly and add the line • Join the points, or use a line of best fit • Clearly label the axes - don’t forget any units • Give the graph a title • Use different point styles if showing more than one data set
- 23. For more information and a free course please visit: http://maths4biosciences.com Maths course for biology and chemistry students: http://mathsbiosciences.usefedora.com If you have found this presentation useful then please share: