Exam Questions Flashcards
(19 cards)
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
If two variables are negatively correlated, what does this mean?
As one variable increases in value, the other tends to decrease in value
What does not directly influence the correlation between 2 variables
The means of the variables
A test of correlation between two samples is used to indicate
A linear relationship
If two variables are positively correlated, what does this mean ?
As one variable decreases in value, the other variable also tends to decrease in value
