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General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 1. Summary Statistics - Preliminary Maths 2. What is the symbol for the mean? © G Dear – 2007 maths.esmartbiz.com Mean Formula? © G Dear – 2007 maths.esmartbiz.com Sum of scores x Number of scores x Summary Statistics - Preliminary Maths 3. Summary Statistics - Preliminary Maths 4. What is the formula for the mean using a Frequency Table? © G Dear – 2007 maths.esmartbiz.com x Using a Frequency Table for the Mean? © G Dear – 2007 maths.esmartbiz.com fx f x fx 56 2.7 f 21 General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 5. Summary Statistics - Preliminary Maths 6. What is the ‘common use’ term for the Mean? © G Dear – 2007 maths.esmartbiz.com Standard Deviation? (Definition) © G Dear – 2007 maths.esmartbiz.com Average. Measure the spread of scores. Summary Statistics - Preliminary Maths Summary Statistics - Preliminary Maths 7. 8. Symbol for Population Standard Deviation? © G Dear – 2007 maths.esmartbiz.com n Symbol for Sample Standard Deviation? © G Dear – 2007 maths.esmartbiz.com n1 or sn General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 9. Summary Statistics - Preliminary Maths 10. Find the Median using the Cumulative Frequency Table. © G Dear – 2007 maths.esmartbiz.com Median? (by Ogive) © G Dear – 2007 Median = 11th Score = 3 Summary Statistics - Preliminary Maths 11. maths.esmartbiz.com Median = 50% Score = 3 Summary Statistics - Preliminary Maths 12. Mode? © G Dear – 2007 maths.esmartbiz.com • The score with the highest frequency. • The most common score. When NOT to use the Mean? © G Dear – 2007 maths.esmartbiz.com When the scores are affected by extreme values. (Outliers) General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 13. Summary Statistics - Preliminary Maths 14. When do you use the Median? © G Dear – 2007 maths.esmartbiz.com When do you use the Mode? © G Dear – 2007 maths.esmartbiz.com When the scores are affected by extreme values. With discrete data, when mean and median are not useful. Summary Statistics - Preliminary Maths Summary Statistics - Preliminary Maths 15. 16. Discrete Data? © G Dear – 2007 maths.esmartbiz.com Data that can take only certain values such as whole numbers. Continuous Data? © G Dear – 2007 maths.esmartbiz.com Data that can take any value in a certain range. General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 17. © G Dear – 2007 18. maths.esmartbiz.com Summary Statistics - Preliminary Maths 19. © G Dear – 2007 Summary Statistics - Preliminary Maths © G Dear – 2007 maths.esmartbiz.com Summary Statistics - Preliminary Maths 20. maths.esmartbiz.com © G Dear – 2007 maths.esmartbiz.com General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 21. © G Dear – 2007 22. maths.esmartbiz.com Summary Statistics - Preliminary Maths 23. © G Dear – 2007 Summary Statistics - Preliminary Maths © G Dear – 2007 maths.esmartbiz.com Summary Statistics - Preliminary Maths 24. maths.esmartbiz.com © G Dear – 2007 maths.esmartbiz.com General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 25. © G Dear – 2007 26. maths.esmartbiz.com Summary Statistics - Preliminary Maths 27. © G Dear – 2007 Summary Statistics - Preliminary Maths © G Dear – 2007 maths.esmartbiz.com Summary Statistics - Preliminary Maths 28. maths.esmartbiz.com © G Dear – 2007 maths.esmartbiz.com General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 29. © G Dear – 2007 30. maths.esmartbiz.com Summary Statistics - Preliminary Maths 31. © G Dear – 2007 Summary Statistics - Preliminary Maths © G Dear – 2007 maths.esmartbiz.com Summary Statistics - Preliminary Maths 32. maths.esmartbiz.com © G Dear – 2007 maths.esmartbiz.com General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 33. © G Dear – 2007 34. maths.esmartbiz.com Summary Statistics - Preliminary Maths 35. © G Dear – 2007 Summary Statistics - Preliminary Maths © G Dear – 2007 maths.esmartbiz.com Summary Statistics - Preliminary Maths 36. maths.esmartbiz.com © G Dear – 2007 maths.esmartbiz.com General Preliminary Mathematics Study Cards Summary Statistics - Preliminary Maths 37. © G Dear – 2007 38. maths.esmartbiz.com Summary Statistics - Preliminary Maths 39. © G Dear – 2007 Summary Statistics - Preliminary Maths © G Dear – 2007 maths.esmartbiz.com Summary Statistics - Preliminary Maths 40. maths.esmartbiz.com © G Dear – 2007 maths.esmartbiz.com
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