Strength of Correlation Answers

A graph shows the horizontal axis numbered 1 to 5 and the vertical axis numbered 1 to 5. Points and a line show an upward trend.

Which r-value represents the weakest correlation?

The number of times a player has golfed in one’s lifetime is compared to the number of strokes it takes the player to complete 18 holes. The correlation coefficient relating the two variables is –0.26.

Which relationships would most likely be causal? Select two options.a positive correlation between the number of homework assignments completed and the grade on the exama positive correlation between the temperature in a canyon in the early spring and the number of snakes seen by hikersa positive correlation between a child’s shoe size and reading speeda negative correlation between the time a glass of ice water sits on the counter and its temperaturea positive correlation between the number of students attending football games and the number of games that are won

Which best describes the strength of a model with an r-value of 0.29?

A graph shows the horizontal axis numbered 4 to 16 and the vertical axis numbered 4 to 12. Points and a line show a downward trend.

Which r-value represents the most moderate correlation?

Ryan gathered data about the age of the different dogs in his neighborhood and the length of their tails.

Which relationships would most likely be causal? Select two options.a negative correlation between the temperature and the amount of snow still on the grounda negative correlation between the number of digital photos uploaded to a website and the amount of storage space that is lefta positive correlation between the length of the side of a pool and its deptha positive correlation between the height of a woman and the height of her brothera negative correlation between the volume of water in a pot and the amount of time that the water takes to boil

Which graph shows data whose r-value is most likely closest to 0?