Unit Test — Unit test Answers

The table shows the time a patient spends at the dentist and the amount of the bill.

Which r–value represents the strongest negative correlation?

The table shows the shipping costs for items of different values.

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

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.

A 2-column table with 4 rows. The first column is labeled x with entries 0, 5, 10, 15. The second column is labeled y with entries 15, 10, 5, 0.

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

The number of grams of zero-calorie sodium in a restaurant meal is compared to the total number of calories in the meal. The correlation coefficient relating the two variables is 0.74.

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