Direction. Write T if the statement is true and F if it is not.

1.A high positive correlation indicates that variable causes apredictable change in variable .

2.The Pearson r can only be used with data measured in ordinal scale.

3.Two variables with a correlation of 0.75 have a weaker association

than two variables with correlation of 0.56.

4.An inverse correlation indicates that the two variables tend to

change either in the direct or in the opposite directions.

5.If two variables have a low correlation, such as = +0.04, the two variables cannot have a strong relationship to one another.

6.Direct relationships in a set of data are always stronger than indirect or inverse relationship in a data set.

7.The relative strength of the relationships in different samples is

most accurately assessed by computing the ² values for the samples.

8.A meaningful correlation coefficient can only be computed when

data are measured in interval or ratio scales.

9.The sign of the correlation coefficient can be used to determine the strength of the relationships between two variables.

10. A correlation coefficient of 0.60 is approximately twice as strong as correlation coefficient of +0.30.

Direction. Solve the following.

1. The scores of five students in mathematics and chemistry classes are: