Hypothesis Testing

Question 1

p-value

Answer 1

likelihood of finding the observed t-statistic if the null hypothesis was true

Question 2

t-statistics and associated p-values

Answer 2

1.645 corresponds to a p-value of 0.1

1.96 corresponds to a p-value of 0.05

2.58 corresponds to a p-value of 0.01

Question 3

skedasticity

Answer 3

statistical word meaning tendency to scatter

Question 4

homoskedasticity

Answer 4

all conditional distributions have the same variance

Question 5

heteroskedasticity

Answer 5

conditional distributions have different variances

Question 6

internal validity

Answer 6

to what extent do we trust that the estimated effects are unbiased given this particular sample of data and context?

Question 7

external validity

Answer 7

to what extent do we think the same relationships hold in other datasets and empirical analysis?