Psychology Final (Test 4)

Question 1

Factorial ANOVA

Answer 1

• at least two independent variables/predictors/factors

Question 2

Main-Effects

Answer 2

• looking if there is a difference between the levels of the ONE variable
• “is there a difference with the orientation of psychology used in therapy?”

Question 3

Interactions

Answer 3

• looking to see how the variables interact/depend on each other
• “does life satisfaction DEPEND on how many clubs you belong to”
• “does attention DEPEND on the relationship and emotion”

Question 4

Interpretation

Answer 4

• estimated by looking at the means

- dependent variable on the Y-axis

Question 5

Terminology

Answer 5

• number of variables > at least two [orientation, time practiced]
• levels for each > orientation for psychology has 3 LEVELS [cognitive, psychodynamic, gestalt]

Question 6

Correlation

Answer 6

• relationship between two continuous variables

Question 7

scatterplot

Answer 7

• displays scores of individuals simultaneously

Question 8

positive relationship

Answer 8

• direct

- line points to top right

Question 9

negative relationship

Answer 9

• non-direct

- line points to the bottom right

Question 10

non-realtionship

Answer 10

• no relationship

- no directionality

Question 11

strength

Answer 11

• range rom 1 to -1
• the closer to 1/-1, the stronger the relationship
• coefficient = r
• sign = positive/negative
• value = strength of relationship

Question 12

effect size

Answer 12

large = .50
medium = .30
small = .10

Question 13

correlation formula

Answer 13

r = ∑(X - Mx)(Y - My)/√(SSx)(SSy)

Question 14

correlation df

Answer 14

df = N - 2

Question 15

Chi-Square

Answer 15

• examine multiple categorical/nominal variables

- no means

Question 16

goodness of fit

Answer 16

• does the data fit expectations

- null = test equality OR test pattern

Question 17

Independence

Answer 17

• are the variables independent of each other > two variables
• look at relation > chi-sq

Question 18

chi-square formula [both]

Answer 18

∑(O-E)²) / E

Question 19

contingency table

Answer 19

• displays the frequency for each level of one nominal/categorical variable crossed with each level of the other nominal/categorical variable

Question 20

independence chi-sq df

Answer 20

df = (Ncolumns - 1) x (Nrows - 1)