Statistics Quiz # 18

A positive correlation where the values of both variables change in the same direction is called

Direct correlation

Indirect correlation

Constant

All of these

Direct correlation is ____ correlation

Positive

Negative

Constant

None

A negative correlation where the values of variables move in opposite direction is called

Direct correlation

Indirect correlation

Constant

All of these

A ____ correlation where the values of variables move in opposite directions.

Positive

Negative

Constant

None

Scatter plot is of paired data points on an x-axis and a y-axis, used to visually represent a correlation.

True

False

In which plot of paired data points on an x-axis and a y-axis, used to visually represent a correlation?

Scatter plot

Scattergram

Scattered

All of these

A correlation that is best expressed visually as a straight line is called

Linear correlation

Correlation matrix

Nonlinear correlation

All of these

A table showing correlation coefficients among more than two variables is called

Linear correlation

Correlation matrix

Nonlinear correlation

All of these

Coefficient of determination is the amount of variance in one variable that is accounted for by the variance in another variable.

True

False

Coefficient of alienation is the amount of variance in one variable that is not accounted for by the variance in another variable.

True

False

Coefficient of alienation is coefficient of nondetermination

True

False

A numerical index that reflects the relationship between two variables with the removal of the influence of a third variable is called

Linear correlation

Correlation matrix

Nonlinear correlation

Partial correlation

____ is the outcome variable or the predicted variable in a regression equation.

Independent variable

Dependent variable

Constant variable

Fixed variable

The ____ variable that is manipulated or the predictor variable in a regression equation.

Independent variable

Dependent variable

Constant variable

Fixed variable

Consistency of a test is called

Ability

Reliability

Valuability

All of these

The score that, if it could be observed, would reflect the actual ability or behavior being measured is called

True score

Observed score

Error score

Total score

The score that is recorded or observed is called

True score

Observed score

Error score

Total score

The part of a test score that is random and contributes to the unreliability of a test is called

True score

Observed score

Error score

Total score

A test retest reliability that examines a test’s consistency over time.

True

False

A parallel forms reliability that examines consistency across different forms of the same test.

True

False

In which reliability that examines whether items on a test measure only one dimension, construct, or area of interest?

Internal consistency

Interrater

External

Constant

In which reliability that examines whether observers are consistent with one another?

Internal consistency

Interrater

External

Constant

How well a test measures what it says it does is called

Validity

Reliability

Ability

None

A type of validity that examines how well a test samples a universe of items is known as

Content based

Criterion based

Concurrent

Predictive

How well a test outcome is consistent with a criterion that exists in the present is ____ criterion validity.

Content based

Criterion based

Concurrent

Predictive

A type of validity that examines how well a test reflects some criterion that exists in either the present (concurrent) or the future (predictive) is called

Content based

Criterion based

Concurrent

Predictive

How consistent a test outcome is with a criterion that occurs in the future is called

Content based

Criterion based

Concurrent based

Predictive based

How well a test reflects an underlying idea is called

Content based

Criterion based

Concurrent based

Construct based

An if–then statement of conjecture that relates variables to one another and is used to reflect the general problem statement is hypothesis

True

False

The difference between sample and population values is sampling error

True

False