11. Correlation

The correlation coefficient $r$ is a measure of the extent to which two factors:

Which $r$-value represents the strongest negative correlation?

Which statistical measure did Francis Galton use to quantify the strength of the relationship for the line of best fit in his studies of heredity?

Which of the following is not measured or described by a $r$ (correlation coefficient)?

Which of the following statements about the correlation coefficient is true?

Given a scatterplot showing a strong negative linear relationship between two variables, which of the following is most likely the correlation coefficient for the data set?

Which of the following is a measure of how well the regression fits the sample data?

Which of the following statements is true about the correlation coefficient?

Given a dataset where the variables have a strong negative linear relationship, which of the following values is most likely to be the correlation coefficient?

When using the $\mathrm{CORREL}$ function in spreadsheet software, what does the function calculate between two variables?

Given four scatterplots, each showing a different pattern of data points, which scatterplot shows the weakest negative linear correlation ($r$ closest to $0$ but less than $0$)?

$A\; correlation\; indicates\; that\; there\; is\; \_\_\_\_\_\; between\; two\; variables.$

Which of the following is true of the correlation coefficient $r$?

What would the scatter plot look like for data that produce a Pearson correlation coefficient of $r=\mathrm{+0.88}$?

Given four scatterplots labeled A, B, C, and D, the calculated correlation coefficients are as follows: A: $0.9$, B: $-0.8$, C: $0.0$, D: $0.5$. Which scatterplot shows the strongest negative linear relationship?