1. 1 Press Ctrl-A ©G Dear2009 – Not to be sold/Free to use Comparison of Data Sets Stage 6 - Year 12 General Mathematic (HSC)

2. 2 012012 2 Mathematics English Stem-and-Leaf-Plot Comparisons 379 467 13 5 79 3578 4 8 Range MathematicsEnglish = 28- 5= 23 - 2 = 21 English has a smaller spread of scores. more consistent English is more consistent than Mathematics. End of Slide

3. 3 012012 2 4 1 5 3 4 37 6 3 79 578 8 Median MathematicsEnglish = 15 = 14 higher Mathematics has a higher middle score. better Mathematics has performed better. Stem-and-Leaf-Plot Comparisons End of Slide Mathematics English 9 7

4. 4 012012 3 2379 467 13 5 79 578 4 8 Interquartile Range MathematicsEnglish = 18 = 17 Q1 Q3 Q1 Q3 - 9 - 3 = 9 = 14 middle 50% Mathematics has a smaller spread of the middle 50% of scores. more consistent Mathematics is more consistent. Stem-and-Leaf-Plot Comparisons End of Slide

5. 5 Box-and-Whisker Plot Comparisons 0 2 4 6 8 10 12 14 16 18 20 English Math Range MathematicsEnglish = 18- 5= 13= 17- 2= 15 smaller Mathematics has a smaller spread in the range. more consistent Mathematics is more consistent. End of Slide

6. 6 0 2 4 6 8 10 12 14 16 18 20 English Math Median MathematicsEnglish = 13= 9 a higher middle score Mathematics has a higher middle score. better Mathematics has performed better. Box-and-Whisker Plot Comparisons End of Slide

7. 7 0 2 4 6 8 10 12 14 16 18 20 English Math Interquartile Range MathematicsEnglish = 17- 7= 10= 16- 3= 13 more consistent Mathematics is more consistent. smaller spread middle 50% Mathematics has a smaller spread of the middle 50% of scores. Box-and-Whisker Plot Comparisons End of Slide

8. 8 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 20 40 60 80 Only general comments can be made easily. Radar Chart Comparisons End of Slide

9. 9 Only general comments can be made easily. 2 4 6 8 0 12345 End of Slide Area Graph Comparisons

10. 10 Males Females Blue Blue Eyes Brown Brown Eyes Totals 20 10 30 45 75 50 55 105 Blue Blue Eyes Males% = 20 105 x 100%≈ 19% Brown Brown Eyes% = 55 105 x 100%≈ 52% Females Females% = 75 105 x 100%≈ 71% End of Show Data Table Comparisons