Seminar 6

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Seminar 6

• By Zachary H. Cohle

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• How was this data produced?

I stole it off a site so its an observational
study.

• Is this result a sample or for an entire
  population?

Wrong Its a sample.
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P
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• What are some sources of Bias?

The people!

• Give some reasons why this data cannot be
  trusted.

Cause people are liars.
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Center?
Spread?
Shape?
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When talking about the spread, what jumps out at
you.
Descriptive Statistics Ages of Men Variable
N N Mean SE Mean StDev Minimum Q1
Median Q3 Ages of Men 84 0 31.179
0.983 9.013 19.000 23.000 28.500
38.750 Variable Maximum Ages of Men
50.000 Descriptive Statistics Ages of
Women Variable N N Mean SE Mean
StDev Minimum Q1 Median Q3 Ages of
Women 84 0 29.79 1.78 16.30 18.00
22.00 24.00 31.00 Variable Maximum Ages
of Women 99.00
Thats right! The StDev is higher for females
therefore their ages vary more!
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Center?
Spread?
Shape?
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Look at the Stem and Leaf

• Is the Males graph skewed at all?
• How bout the Females graph?
• What ages of Females are most common?
• How bout Males?
• Are the Female numbers more spread out than the
  Males?

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Finished