Exam 7: The Correlation Coefficient

In a nonlinear or curvilinear relationship,as the X scores change,the Y scores

Which of the following r-values indicates the weakest relationship between two variables?

The best-fitting line through a scatterplot is known as the

Using a correlational design,a researcher found a relationship between the healthiness of one's heart and the amount of fish oil in one's diet.The researcher should conclude that

Calculate the appropriate correlation coefficient for the following data,assuming X is an interval variable and Y is a ratio variable.

The strength of a relationship is indicated by the extent to which _____ paired with one and only one individual value of the _____ variable.

Which correlation coefficient should we use if we want to find out whether a relationship exists between two variables that represent pairs of ordinal scores?

What kind of relationship is depicted in the following graph?

Which correlation coefficient should we use if we want to find out whether a relationship exists between scores from one interval variable and one ordinal variable?

In general,a positive correlation means that as the values of one variable _____,there is a tendency for the values of the other variable to _____.

Calculate the appropriate correlation coefficient for the following data.

"The more you save,the less you spend" describes

A "weak" relationship between two variables is represented by

What type of relationship does the following regression line represent?

In a correlational analysis,N stands for the

If there is a relationship between "income" and "happiness," then as the amount of income increases,the amount of happiness

To know whether there is a relationship between two variables,you draw a line around the outer edges of a scatterplot.If there is a negative relationship,

When plotting correlational data,the appropriate graph to use is the

In a linear relationship,as the X scores increase,the Y scores change

If you see the notation ,what should you do?