A local ice cream shop kept track of the number of cans of cold soda it sold each day, and the temperature that day, for two months during the summer. The data are displayed in the scatterplot below:The one outlier corresponds to a day on which the refrigerator for the soda was broken. Which of the following is true? A reasonable value of the correlation coefficient r for these data is 1.2. If the temperature were measured in degrees Celsius (C = 5/9*(F-32)), the value of r would change accordingly. If the outlier were removed, r would increase. If the outlier were removed, r would decrease.

The weights (in pounds) and cholesterol levels (in mg/dL) of several individuals was observed. The data are shown in the scatterplot below:The outlier on the graph is likely due to an error in recording the data. Which of the following statements is true? A reasonable value of the correlation coefficient r for these data is 1.2. If the weight (WT) were measured in kilograms instead of pounds (1 lb = 0.4536 kg) the value of r would change accordingly. If the outlier were removed, the correlation coefficient (r) would increase. If the outlier were removed, the correlation coefficient (r) would decrease.

A correlation of r = 0.85 is found between weekly sales of firewood and cough drops over a 1-year period. Which of the following is a correct interpretation of this correlation value? There is a pretty strong positive linear relationship between sales of firewood and cough drops. Temperature is a possible lurking variable that is behind this relationship. Fire must be the cause of coughing.

How can outliers impact the correlation coefficient?They can inflate the coefficient.They can deflate the coefficient.They can make the coefficient closer to zero.All of the above

Which of these r-values represents the weakest correlation?A.0.2B.0.1C.0.4D.0.3SUBMITarrow_backPREVIOUS

Choose the most likely correlation value for this scatterplot:r = 0.436r = 0.100r = −0.897r = 0.995r = −0.575