Misc

Question 1

Central tendency

Answer 1

Tendency for the values of a random variable to cluster around its mean, mode or median

Central or typical value for a probability distribhtion

Question 2

Comfidence interval

Answer 2

Esgimated range of values which is likely to include an unknown population parameter

Question 3

Error

Answer 3

Amount bh which an observed variate differs from the value predicted by the model

Question 4

Two way anova

Answer 4

Intera tion: effect of x1 on y is modulated by x2

No interaction: variation in y can be explained by x1, x2 or both

Question 5

H0

Answer 5

Probability of a deviation away from random expectation

Question 6

Statistical model

Answer 6

Hypothesised relationship in the sampled population between the response variabl3 anr the predictor variable

Question 7

Variance

Answer 7

Average of n sqdev rrom the mean

Question 8

Sample or treatment

Answer 8

Collection of observations measured at a level of x

Question 9

Scores, data pointa

Answer 9

Measured of responde variable at each level of the explanatory variable

Question 10

Variable

Answer 10

Property which varies in a measurable way between subjects in a sample

Question 11

R

Answer 11

Sqrt(ssexllained/sstotal)

Question 12

R^2

Answer 12

Ssexplained/sstotal