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Unformatted text preview: respect.
“ Just a statistics trick”.
“There are three kinds of lies: lies, damned lies, and statistics.”
Statistics courses are usually not students’ ﬁrst choice for a fun
elective class.
Professor: DaiTrang Le Chapter 1 – Introduction to Data January 8, 2014 10 / 32 What are data? Statistics
“You can prove anything with Statistics?”
A. TRUE
B. FALSE Statistics gets no respect.
“ Just a statistics trick”.
“There are three kinds of lies: lies, damned lies, and statistics.”
Statistics courses are usually not students’ ﬁrst choice for a fun
elective class.
Professor: DaiTrang Le Chapter 1 – Introduction to Data January 8, 2014 10 / 32 What are data? Statistics
“You can prove anything with Statistics?”
A. TRUE
B. FALSE Statistics gets no respect.
“ Just a statistics trick”.
“There are three kinds of lies: lies, damned lies, and statistics.”
Statistics courses are usually not students’ ﬁrst choice for a fun
elective class.
Professor: DaiTrang Le Chapter 1 – Introduction to Data January 8, 2014 10 / 32 What are data? Statistics
“You can prove anything with Statistics?”
A. TRUE
B. FALSE Statistics gets no respect.
“ Just a statistics trick”.
“There are three kinds of lies: lies, damned lies, and statistics.”
Statistics courses are usually not students’ ﬁrst choice for a fun
elective class.
Professor: DaiTrang Le Chapter 1 – Introduction to Data January 8, 2014 10 / 32 What are data? What are data? What are data?
Data are numbers or values in context.
A list of numbers: 8.32, 7.91, 9.64, 9.18, 10.33,7.46
What can you say if this list represents?
Birth Weights
Price in dollars and cents for gas
Commuting distances Professor: DaiTrang Le Chapter 1 – Introduction to Data January 8, 2014 11 / 32 What are data? What are data? What are data?
Data are numbers or values in context.
A list of numbers: 8.32, 7.91, 9.64, 9.18, 10.33,7.46
What can you say if this list represents?
Birth Weights
Price in dollars and cents for gas
Commuting distances Professor: DaiTrang Le Chapter 1 – Introduction to Data January 8, 2014 11 / 32 What are data? What are data? What are data?
Data are numbers or values in context.
A list of numbers: 8.32, 7.91, 9.64, 9.18, 10.33,7.46
What can you say if this list represents?
Birth Weights
Price in dollars and cents for gas
Commuting distances Professor: DaiTrang Le Chapter 1 – Introduction to Data January 8, 2014 11 / 32 What are data? What are data? Data are observations that you or someone else records
Data can be numeric
Measurements: Weight, Height, Distance, etc. Number of Customers Data can be nonnumeric or categorical
Months, Days in a Week
Ethnicities of each student on campus Professor: DaiTrang Le Chapter 1 – Introduction to Data January 8, 2014 12 / 32 What are data? Numerical or Categorical? Categorical Data are often coded using numbers.
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 Spring '14

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