Final

Question 1

Standard error of estimate

Answer 1

Sy.x

Amount of error in a prediction, average deviation from line

Question 2

Sy.x increases with

Answer 2

increased variance

Question 3

Pearson r

Answer 3

measure of strength and direction of a relationship, linear only

Question 4

r^2

Answer 4

variability in a factor associated with differences

Question 5

Properties of r

Answer 5

From -1 to 1
+-1 is a perfect linear relationship
Unitless
Represents the strength/magnitude of a relationship

Question 6

Direct relationship

Answer 6

+r

Question 7

Inverse relationship

Answer 7

-r

Question 8

As standard error increases

Answer 8

the greater the spread

Question 9

y = bx + a

Answer 9

b = slope, a = y-intercept

Question 10

Use corr t test for

Answer 10

matched groups, repeated measures, or when the data is clearly correlated

Question 11

Repeated Measures

Answer 11

Same subjects in all conditions

Question 12

For a t test, assume _____ of variance

Answer 12

homogeniety

Question 13

The higher the ____, the more leptokurtic the t

Answer 13

N

Question 14

As N increases, the standard deviation of t gets closer to

Answer 14

1

Question 15

Directional tests are ____ powerful than non-directional test

Answer 15

more

Question 16

Power increases as _____ increase

Answer 16

alpha, N, intensity of IV

Question 17

Type 1 Error

Answer 17

Rejcted Ho when it was true, power = alpha

Question 18

Type 2 Error

Answer 18

Failed to reject Ho when it was false, power = beta

Question 19

Correctly rejecting Ho

Answer 19

power = 1 - beta

Question 20

Correctly retaining Ho

Answer 20

power = 1 - alpha