Exam Questions Flashcards
A type 2 error occurs when
We falsely retain the null hypothesis
Test-retest reliability is demonstrated by
Correlating the test with itself on different occasions
Statistical significance may be defined as
The probability of making a type one error
Typically, a finding is significant if it’s p-value is
Less that 0.05
The statistical power of an inferential test is formally defined as
One minus the probability of making a type 2 error
Which one of the following reduces the statistical power of an experimental design
Using two-tailed hypothesis
If an F- test is significant, it implies that
The population variance are unequal
Counterbalancing is employed to
Reduce the impact of carry-over effects for within the subject design
A type 2 error occurs when
We falsely retain the null hypothesis
Statistical significance may be defined as
The probability of making a type 1 error
The sampling distribution of the mean indicates
A distribution of sample means
Given a random sample from a population, the best estimate of he population mean is
The sample mean
Independent t test is used to test for
Significant differences between variable means
If variables are said to possess Homogeneity of variance this implies that
The population variance are equal
The f test is used to determine if
The population variances are equal