1. Linear model 1

Question 1

The SPINE of statistics refers to 5 key concepts. What are these 5 key concepts?

Answer 1

1. Standard error
2. Parameters
3. Interbal estimates
4. Null hypothesis significance testing (NHST)
5. Estimation

Question 2

Most psychological statistical models boil down to what very simple idea?

Answer 2

Predicting an outcome from one or more measured variables

Question 3

What is the equation for The General Linear Model (GLM)?

Answer 3

Outcome (i) = (model(i)) + error (i)

Outcome(i) = b0 + b1predictor + … + error (i)

Question 4

What does bn refer to in the general linear model?

Answer 4

Estimate of parameter for a predictor
direction/strength of relationship/effect
difference in means

Question 5

What does b0 refer to in the general linear model equation?

Answer 5

Estimate of the value of the outcome when predictor(s) = 0 (intercept)

Question 6

There is always what in prediction?

Answer 6

Error

Question 7

The model you fit in statistics represents what?

Answer 7

Hypotheses

Question 8

The model you fit in statistics is typically a variation of what?

Answer 8

The general linear model

Question 9

What is one method of estimating parameters?

Answer 9

Ordinary least squares (OLS)

Question 10

What two things do parameter estimates (b) tell us?

Answer 10

1. The shape of the model
2. Size and direction of relationship between predictor(s) and outcome

Question 11

What are parameter estimates estimated from?

Answer 11

The sample data