Correlation

Question 1

Expression of the degree and direction of correspondence between 2 things

Answer 1

Correlation

Question 2

Linear relationship between only 2 variables, usually continuous in nature

Answer 2

Coefficient of correlation (r)

Question 3

A widely used statistic for obtaining an index of the relationship between two variables when the relationship between the variables is linear and when the two variables correlated are continuous (that is, theoretically can take any value)

Answer 3

Pearson r

Question 4

Significance at .05 means…

Answer 4

The result could have been expected to occur by chance alone 5 times or less in a hundred

Question 5

Mean for the sum of products is calculated, and mean is the value of “r”

Answer 5

Pearson r

Question 6

A value indicating how much variance is shared by two variables being calculated.

Answer 6

Coefficient of determination

Question 7

Square of the correlation coefficient and multiply by 100

Answer 7

Coefficient of determination

Question 8

R-squared tells you how much of the variation in your Y-values (predicted values) can be explained by variation in your X-variables (predictor variables)

Answer 8

Coefficient of determination (r squared)

Question 9

A deviation about a mean of distribution

Answer 9

moment (product-moment coefficient of correlation)

Question 10

Individual deviations about the mean of a distribution

Answer 10

Deviates (product-moment coefficient of correlation)

Question 11

Multiplication of 2 corresponding standard scores can therefore be comceptualized as one that entails the computation of he product of corresponding moments

Answer 11

Product (product-moment coefficient of correlation)

Question 12

Also known as rank-order correlation coefficient

Answer 12

Spearman rho

Question 13

This index of correlation may be the statistic of choice when the sample size is small (less than 30) and both sets of measurements are interval or ordinal; non-parametric version of Pearson r

Answer 13

Spearman rho

Question 14

A graphic description of correlation achieved by graphing the coordinate points for the two variables.

Answer 14

Scatterplot/scatter diagram/bivariate distribution

Question 15

What is curvilinearity?

Answer 15

How curved a graph is (eyeball gauge)

Question 16

An extremely atypical plot point in a scatterplot; any extremely atypical finding in research

Answer 16

Outlier

Question 17

The analysis of relationships among variables to understand how one variable may predict another

Answer 17

Regression

Question 18

Represented by a specific value of a and b is fitted precisely to the points on the scatterplot so that the sum of the squared vertical distances from the points to the line will be smaller than any other line that could be drawn to predict one score variable

Answer 18

Regression line

Question 19

In regression, an error in the prediction of Y from X; the lower the degree of correlation, the higher the standard error of the estimate

Answer 19

Standard error of estimate (SEE)

Question 20

The analysis of relationships between more than one independent variable and one dependent variable to understand how each independent variable predicts the dependent variable

Answer 20

Multiple regression

Question 21

If ang usa ka predictor kay di correlated sa other predictors but correlate sa Y, then mas naay weight kay sa sa 2 predictors na highly correlated to each other because redundant na sya, thus less weight to prediction to Y (also take into account correlations among predictors (X) dili ra correlation sa ipredict (Y)

Answer 21

To remember sa multiple regression

Question 22

A family of techniques used to statistically combine info across studies to produce single estimates of the statistics being studies; value depends on the skill and ability of meta analyst

Answer 22

Meta-analysis

Question 23

Also referred to as a cutoff score, a reference point, usually numerical, derived as a result of judgment, used to divide a set of data into two or more classifications, with some action to be taken or some inference to be made on the basis of these classifications

Answer 23

Cut score

Question 24

Know about the culture of testaker and era of testtaker experienced

Answer 24

Culturally informed assessment

Question 25

A dichotomous variable that naturally form 2 categories

Answer 25

True dichotomous

Question 26

A dichotomous variable that reflect an underlying continuous scaled forced into a dichotomy (e.g.range of scores na makapass or fail in an exam)

Answer 26

Artificially dichotomous

Question 27

Expresses the relationship between a continuous variable and an artificial dichotomous variable

Answer 27

Biserial correlation

Question 28

True dichotomous and continuous variable

Answer 28

Point biserial correlation

Question 29

artificial dichotomous and true dichotomous

Answer 29

Phi coefficient

Question 30

Both artificial dichotomous variables

Answer 30

Tetrachoric r

Question 31

Continuous to continuous variables

Answer 31

pearson r