Transcript PSYC B5: Elementary Statistics for the Behavioral & Social Sciences

PSYC B5: Elementary Statistics for the
Behavioral & Social Sciences
Dr. Ginger M. LeBlanc
Today’s Special
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Introduction
Enrollment
Syllabus
How to not only survive, but to do well
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Math phobia
Textbook
Study groups
Active Learning
What is Statistics?
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Procedures used to
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Organize
Summarize
Conclude
Communicate
Who are You?
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Researcher
Helping Profession
Office Assistant
Teacher
Parent
Shopper
Patient
Statistics
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Math
Codes / Symbols
“statistical notation”
Book is no fun
Open Mind!
Don’t be a
Blockhead!
Mathematical Operations
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X or Y stand for each individual score
obtained in a study.
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Addition
X + Y.
Subtraction
X – Y.
Division
X / Y.
Multiplication XY, (X)Y, or X(Y).
X2 “X squared” or “X times X.
X
“the square root of X.”
Rounding
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2 decimal places
If the number in the next decimal place is 5
or greater than 5, round up
If the number in the next decimal place is
less than 5, round down
Transformations
Mathematical procedure for systematically
converting a set of scores into a different set of
scores.
Proportions
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Is a decimal number between 0 and 1 that
indicates a fraction of the total
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To transform a number to a proportion, divide
the number by the total
Percents
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A percent (or percentage) is a proportion
multiplied by 100
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To transform a percent back into a
proportion, divide the percent by 100
Creating Graphs
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The horizontal line
across the bottom of a
graph is the X axis
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The vertical line at the
left-hand side is the Y
axis
Plot of Height and
Weight Scores
Next Class
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Read & take notes on
Chap. 1 & 2
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Bring Calculator
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Practice problems in
chapter 1 & application
questions on page 13
Quiz