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Lecture 3

# Lecture 3 September 17.pdf

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Wilfrid Laurier University

Geography

GG254

Steven Roberts

Fall

Description

Lecture 3 September 17, 2013
Monday 7pm 2e2
*study basic operations for numeracy test next Thursday
Variable
- General expressions are x, y, z
- Letters near the middle of the alphabet take integers variables
- i is restriced to the number on the dice (discreet value)
- Discrete- counting values
- Continuous- real numbers (0.03, 0.0343)
- Random Variables- tied to specific meaning
Constants
- Review slide notes for this section
Basic Algebra
- For real numbers
Order of Operations
- Evaluated from left to right
- BEDMAS (brackets, exponent, Division, multiplication, addition ,subtraction)
- Examples on slide
- 5 –(-3), negative and negative is positive therefore, 5 plus 3
Exponents
- Review slide for examples
Unity and Zero
- Examples on slide
****Notation (greek letters)
- MU stands for population mean
- Lower Case Sigma stands for population standard deviation
- Rest of examples on slide
- PDF numeracy stuf

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