Exam Questions Flashcards

1
Q

A type 2 error occurs when

A

We falsely retain the null hypothesis

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2
Q

Test-retest reliability is demonstrated by

A

Correlating the test with itself on different occasions

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3
Q

Statistical significance may be defined as

A

The probability of making a type one error

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4
Q

Typically, a finding is significant if it’s p-value is

A

Less that 0.05

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5
Q

The statistical power of an inferential test is formally defined as

A

One minus the probability of making a type 2 error

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6
Q

Which one of the following reduces the statistical power of an experimental design

A

Using two-tailed hypothesis

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7
Q

If an F- test is significant, it implies that

A

The population variance are unequal

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8
Q

Counterbalancing is employed to

A

Reduce the impact of carry-over effects for within the subject design

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9
Q

A type 2 error occurs when

A

We falsely retain the null hypothesis

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10
Q

Statistical significance may be defined as

A

The probability of making a type 1 error

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11
Q

The sampling distribution of the mean indicates

A

A distribution of sample means

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12
Q

Given a random sample from a population, the best estimate of he population mean is

A

The sample mean

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13
Q

Independent t test is used to test for

A

Significant differences between variable means

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14
Q

If variables are said to possess Homogeneity of variance this implies that

A

The population variance are equal

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15
Q

The f test is used to determine if

A

The population variances are equal

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16
Q

If two variables are negatively correlated, what does this mean?

A

As one variable increases in value, the other tends to decrease in value

17
Q

What does not directly influence the correlation between 2 variables

A

The means of the variables

18
Q

A test of correlation between two samples is used to indicate

A

A linear relationship

19
Q

If two variables are positively correlated, what does this mean ?

A

As one variable decreases in value, the other variable also tends to decrease in value