ICT Role in 21st Century Education & its Challenges.pptx
Lesson03_new
1. Statistics for Management Lesson 3 Summarizing and Describing Numerical Data
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3. Summary Measures Central Tendency Mean Median Mode Midrange Quartile Midhinge Summary Measures Variation Variance Standard Deviation Coefficient of Variation Range
4. Measures of Central Tendency Central Tendency Mean Median Mode Midrange Midhinge
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11. Summary Measures Central Tendency Mean Median Mode Midrange Quartile Midhinge Summary Measures Variation Variance Standard Deviation Coefficient of Variation Range
12. Measures of Variation Variation Variance Standard Deviation Coefficient of Variation Population Variance Sample Variance Population Standard Deviation Sample Standard Deviation Range Interquartile Range
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17. Sample Standard Deviation For the Sample : use n - 1 in the denominator. Data: 10 12 14 15 17 18 18 24 s = n = 8 Mean =16 = 4.2426 s
18. Comparing Standard Deviations s = = 4.2426 = 3.9686 Value for the Standard Deviation is larger for data considered as a Sample . Data : 10 12 14 15 17 18 18 24 N= 8 Mean =16
19. Comparing Standard Deviations Mean = 15.5 s = 3.338 11 12 13 14 15 16 17 18 19 20 21 11 12 13 14 15 16 17 18 19 20 21 Data B Data A Mean = 15.5 s = .9258 11 12 13 14 15 16 17 18 19 20 21 Mean = 15.5 s = 4.57 Data C
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24. Distribution Shape & Box-and-Whisker Plots Right-Skewed Left-Skewed Symmetric Q 1 Median Q 3 Q 1 Median Q 3 Q 1 Median Q 3
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