Statistical Studies: Organizing Data (Practice)~amdm

The scatter plot shows the study time and test scores for the students in Mrs. Johnson's English Literature class. Which table most accurately organizes the data from the scatter plot? a. Table A b. Table B c. Table C d. Table D

A. Table A

Use the scatter plot of car resale values to answer the following question. What can you say about the correlation between the age of a car and its resale value? a. The trend line slopes downward from upper left to lower right, so there is a negative correlation between a car's age and its resale value. b. The trend line slopes downward from upper left to lower right, so there is a positive correlation between a car's age and its resale value. c. The trend line slopes upward from lower right to upper left, so there is a positive correlation between a car's age and its resale value. d. There is no correlation between a car's age and its resale value.

A. The trend line slopes downward from upper left to lower right, so there is a negative correlation between a car's age and its resale value.

The following scatter plot depicts the number of chicken pox cases after 1988. The variable x represents the number of years after 1988. The variable y represents the number of cases in thousands. Does there appear to be a linear relationship? Explain your answer. a. Yes, there is a linear relationship. The data appears to have a negative correlation. b. Yes, there is a linear relationship. The data appears to have a positive correlation. c. No, there is not a linear relationship. The data seems random. d. No, there is not a linear relationship. There is no line which goes through all the points.

A. Yes, there is a linear relationship. The data appears to have a negative correlation.

The scatter plot shows the study time and test scores for the students in Mrs. Johnson's English Literature class. Which of the following is an appropriate score for a student who studies for 1.5 hours? a. 78 b. 94 c. 81 d. 74

B. 94

Eight people of various ages were polled and asked to estimate the number of CDs they had bought in the previous year. The following scatter plot depicts the information collected. The variable x represents the age. The variable y represents the number of CDs.. Determine which table would have been used to make the scatter plot and decide if there is a linear relationship between the age of a person and the amount of CDs purchased. a. Table A, positive correlation b. Table A, negative correlation c. Table B, positive correlation d. Table B, negative correlation

B. Table A, negative correlation

The following is a scatter plot of the heights and weights of the students in Mr. Baldwin's PE class. Which of the following tables most accurately organizes the data used with for the scatter plot? a. Table A b. Table B c. Table C d. Table D

B. Table B

The following scatter plot shows the billions of dollars spent by travelers in the United States since 1993. Which table most accurately organizes the data from the graph? a. Table A b. Table B c. Table C d. Table D

B. Table B

Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive or negative correlation, describe its meaning in the situation. a. positive; as time passes, the number of quarts picked decreases. b. negative; as time passes, the number of quarts picked decreases. c. no correlation d. positive; as time passes, the number of quarts picked increases.

B. negative; as time passes, the number of quarts picked decreases.

The following table gives the number of chicken pox cases after 1988. The variable x represents the number of years after 1988. The variable y represents the number of cases in thousands. Using the data in the table, choose which set of axes and which set of ordered pairs should be used in making a scatter plot of the data. Set A (185.4, 1), (173.1, 2), (147.1, 3), (158.4, 4), (134.7, 5), (151.2, 6) Set B (1, 185.4), (2, 173.1), (3, 147.1), (4, 158.4), (5, 134.7), (6, 151.2) a. Graph A, Set A b. Graph A, Set B c. Graph B, Set A d. Graph B, Set B

D. Graph B, Set B

Determine whether the graph shows a positive correlation, a negative correlation, or no correlation. If there is a positive or negative correlation, describe its meaning in the situation. Determine whether a scatter plot of the data for the following situation might show a positive, negative, or no relationship. a. positive relationship; as the age of a car increases, the value of the car increases. b. positive relationship; as the age of a car increases, the value of the car decreases. c. negative relationship; as the age of a car increases, the value of the car increases. d. negative relationship; as the age of a car increases, the value of the car decreases.

D. negative relationship; as the age of a car increases, the value of the car decreases.