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1 Press Ctrl-A ©G Dear 2009 – Not to be sold/Free to use Z-scoreComparisons Stage 6 - Year 12 General Mathematics HSC

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2 Z Scores – Comparison (1/2) MathEnglish How can I tell if I am doing better in Math or English? 7555 My scores were 75 in English and 55 in Math. English. x = 60 and s = 10 Math. x = 45 and s = 5 z = x – x s z = 75- 60 10 z = 1.5 z = 55- 45 5 z = 2 MathEnglish. Since Math had a larger z score than English. The best mark was ……

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3 Z Scores – Comparison (2/2) AB Am I doing better on golf course A or course B? 65A57B My scores were 65 on course A and 57 on course B. Course A x = 70 and σ = 5 Course B x = 65 and s = 4 z = 65- 70 5 z = -1 z = 57- 65 4 z = -2 Course BCourse A. Since Course B had a lower z score than Course A. the best score was …… Lowest Z Score Wins

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1 Press Ctrl-A ©G Dear 2009 – Not to be sold/Free to use z-scores Stage 6 - Year 12 General Mathematics HSC.

1 Press Ctrl-A ©G Dear 2009 – Not to be sold/Free to use z-scores Stage 6 - Year 12 General Mathematics HSC.

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