# Summarize and Compare Responses  Mean (Average)  Median  Standard Deviation  Mean (Average)  Median  Standard Deviation.

## Presentation on theme: "Summarize and Compare Responses  Mean (Average)  Median  Standard Deviation  Mean (Average)  Median  Standard Deviation."— Presentation transcript:

Summarize and Compare Responses  Mean (Average)  Median  Standard Deviation  Mean (Average)  Median  Standard Deviation

16, 23, 25, 17, 26, 24, 11, 24, 19, 21, 15, 13, 21, 21, 20, 20, 21, 28, 18, 17, 17, 22, 20, 10, 22, 23, 16, 22, 20, 21, 21, 21, 31, 17, 21, 16, 16, 20, 18, 22, 18, 22, 22, 16, 21, 17, 25, 20, 21, 26 Hypothetical: David Archuleta releases a CD  50 CD buyers, chosen at random.  Asked their age.  50 CD buyers, chosen at random.  Asked their age.

16, 23, 25, 17, 26, 24, 11, 24, 19, 21, 15, 13, 21, 21, 20, 20, 21, 28, 18, 17, 17, 22, 20, 10, 22, 23, 16, 22, 20, 21, 21, 21, 31, 17, 21, 16, 16, 20, 18, 22, 18, 22, 22, 16, 21, 17, 25, 20, 21, 26 Hypothetical: David Archuleta releases a CD  50 CD buyers, chosen at random.  Asked their age.  50 CD buyers, chosen at random.  Asked their age. Mean = 20.1 years Median = 21.0 years Standard Deviation = 4.1 years

Frequency Table

Frequency Histogram

50 responses

1000 responses

2000 responses

3000 responses

4000 responses

5000 responses

6000 responses

Bell Shaped Pattern

Gaussian (Normal) Distribution

Peaked & Symmetric

2 Inflection Points

68.3% of Total Area

CD Sales in Missouri

Different Mean & Std. Dev.

Still 68.3% of Total Area

Skewed Distribution

Utah Sales Missouri Sales

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