Welcome to Statistics!

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Welcome to Statistics!
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Welcome to Statistics!
(Your biggest thrill at Stanford)
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Course Objectives

• You will be prepared for more advanced courses in
  multiple regression and analysis of variance.

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Course Objectives

• You will be prepared for more advanced courses in
  multiple regression and analysis of variance.
• We will help each other so that no one will fail.

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Course Objectives

• You will be prepared for more advanced courses in
  multiple regression and analysis of variance.
• We will help each other so that no one will fail.
• You will fall in love with statistics.

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http//www.stanford.edu/hakuta/Statistics/Syllabu
s2002.htm
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Population
The goal is to describe this as accurately as
possible.
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Population
Sample
You take a sample.
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Population
µ
Sample X
_
_
You describe the sample.
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(No Transcript)
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SampleC XC
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SampleD XD
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Population
SampleB XB
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µ
SampleE XE
SampleA XA
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_
The sample mean is just one of many possible
sample means drawn from the population, and is
rarely equal to the real population value.
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Correlation
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Regression
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How do we know if the difference between these
means, of 53.75 - 51.16 2.59, is reliably
different from zero?
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GAUSS, Carl Friedrich 1777-1855
http//www.york.ac.uk/depts/maths/histstat/people/
gauss_note.gif.gz
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A demonstration.
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Population
http//star.cde.ca.gov/star2002/district_index.htm
l
Please go to this url
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Population
µ
Sample X
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_
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• Pick a school district that is not a high school
  district and does not appear to be a special
  district, e.g., a charter school, HomeSmartKids
  of Knightsen, etc. beyond that, try to pick one
  randomly from the list.
• Report the following
• 1. For noneconomically disadvantaged, Grade 2
  and Grade 5 Reading Mean Scaled Score.
• 2. For economically disadvantaged, Grade 2 and
  Grade 5 Reading Mean Scaled Score.