Which of the following graphs shows a negative linear relationship with a correlation coefficient, r, close to –0.5?A.Graph AB.Graph BC.Graph CD.Graph DSUBMITarrow_backPREVIOUS

What type of correlation do the data in the graph show?A.Negative correlationB.No correlationC.Perfect correlationD.Positive correlation

If the plotted points in a scatter diagram lie from upper left to lower right, then the correlation is(a) Positive(b) Zero(c) Negative(d) none of these

We first introduce the concept of correlation in the Section 2.5 notes.Consider a linear model of the relationship between two quantitative variables in which the slope coefficient is non-zero. Which of the following statements about the slope coefficient and the correlation r between the two variables is correct?Question 1Select one:a.The slope coefficient could be negative when the correlation coefficient is positiveb.The slope coefficient and the correlation coefficient should have the same sign (both positive, or both negative)c.The slope coefficient could be positive when the correlation coefficient is negatived.The correlation coefficient can only be a positive value (regardless of whether the slope is positive or negative)Clear my choice

If there is no relationship (linear or otherwise) between two quantitative variables as observed on a scatterplot, the value of the correlation coefficient, r, is likely to be which of the following? Closer to 1 Closer to −1 Closer to 0 Either closer to −1 or 1

Which of the following statements about the correlation coefficient is FALSE? It measures the strength and direction of a linear relationship. A value of 0 indicates no linear relationship. It can only take positive values. A value of -1 indicates a perfect negative linear relationship.