Textbook Notes (290,000)
CA (170,000)
UTSC (20,000)
STAB22H3 (100)
Chapter

STAB22H3 Chapter Notes -Canadian Food Inspection Agency, Health Canada, Eth


Department
Statistics
Course Code
STAB22H3
Professor
Ken Butler

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CHAPTER 1
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STATISTICS (CHAPTER READINGS)
CHAPTER 1 - STATS STARTS HERE!
- Statistics helps us to see the world more clearly & accurately.
So, What is (Are) Statistics?
[GBOX]
What
is
Statistics? (sing. form)
- way of reasoning that uses collection of tools & methods to help comprehend the
world
What
are
Statistics? (pl. form)
- specific calculations made from data
What are data?
- datum is sing. form
- values, but it takes into acc't the context they came in

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[GBOX]
[1]
- very conspicuous to see ppl collecting data from us, about us
- ex. UPS - collects data for every package it ships & delivers and puts it all
together in a large database
[2]
Statistics
- helps w/ making sense of the complicated world we live in
- ex. by evaluating risk of GM foods that Canadian Food Inspection Agency is
looking into
- ex. by evaluating safety & effectiveness of new drugs sent for approval to
Health Canada
- ex. predicting # of AIDs cases
- ex. #customers likely to respond to sale in mall
- this discipline is needed whenever
- data is involved
- there is need to comprehend world
Statistics in a Word
[3]

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- Statistics is about VARIATION
- data varies b/c
- we aren't able to observe eth
- what is measured and is observed, it is done
imperfectly (b/c humans are not perfect)
- Statistics helps us to work with this variation by:
- understanding it
- modelling it
=> by doing this, can see
thro
it, thereby deciphering the underlying truths &
patterns
An. seeing forest thro. trees
- What is a central challenge of the Statistics discipline is making sense of
variations in data
[4]
How does this Book Help?
- what is done w/ data can be better comprehended if pic's are made for it
- book goes thro. entire process of
- thinking about prob
- finding & showing results
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