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Lecture 2

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

by OC340433

Department

PsychologyCourse Code

PSYB07H3Professor

Dwayne PareLecture

2This

**preview**shows page 1. to view the full**4 pages of the document.**PSYB07 â€“ LECTURE 02

BASIC CONCEPTS

Math Review

- Order of operations (BEDMAS) [left to right]

ïƒ˜Brackets

ïƒ˜Exponents

ïƒ˜Division

ïƒ˜Multiplication

ïƒ˜Addition

ïƒ˜Subtraction

Population vs. Sample

- Population

ïƒ˜Entire collection of event in which youâ€™re interested

- Sample

ïƒ˜Subset of population

- Example: population= PSYB07 class, sample= PSYB07 tutorials

- CASE: Iâ€™m in a car with 3 of my friends, and weâ€™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

ïƒ˜Can be calculated for a population or a sample

ïƒ˜Calculating statistics or parameters

ïƒ˜Describe the population becomes smaller

- Inferential Statistics (make conclusions about population from samples)

ïƒ˜Estimating population parameters using sample statistics

ïƒ˜Making inferences about population parameters

Population vs. Sample

- Descriptive statistics

- â€¦..

- â€¦..

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