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Lecture 2

PSYB07H3 Lecture Notes - Lecture 2: Statistical Inference, Barbecue, Descriptive Statistics


Department
Psychology
Course Code
PSYB07H3
Professor
Dwayne Pare
Lecture
2

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PSYB07 – LECTURE 02
BASIC CONCEPTS
Math Review
- Order of operations (BEDMAS) [left to right]
Brackets
Exponents
Division
Multiplication
Addition
Subtraction
Population vs. Sample
- Population
Entire collection of event in which you’re interested
- Sample
Subset of population
- Example: population= PSYB07 class, sample= PSYB07 tutorials
- CASE: I’m in a car with 3 of my friends, and we’re trying to decide
where to go for dinner.
- Korean barbeque? A poll is conducted between Tim, Jess, Sijing,
Dwayne
- Population=Tim, Jess, Sijing, Dwayne Sample= Tim, Jess, Sijing,
Dwayne
- Population: all the people in the bus, Sample: Tim, Jess, Sijing, Dwayne
Descriptive vs. Inferential Statistics
- Descriptive Statistics (describe a data set
Can be calculated for a population or a sample
Calculating statistics or parameters
Describe the population becomes smaller
- Inferential Statistics (make conclusions about population from samples)
Estimating population parameters using sample statistics
Making inferences about population parameters
Population vs. Sample
- Descriptive statistics
- …..
- …..
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