In 1985, the average ACT score was 18 with a standard deviation of 6. Also in 1985, the average SAT score was 500 with a standard deviation of 100. Dr. Robertson took both tests in 1985 and scored a 26 on the ACT
and a 620 on the SAT. Which statement accurately reflects the comparison of Dr. Robertson's scores?

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

Researchers were interested in whether relaxation training decreases the number of headaches a person experiences. they randomly assigned 20 participants to a control group or a relaxation training group and noted the change in number of headaches each group reported from the week before training to the week after training. which statistical analysis should be performed to answer the researchers' question?

Me asap! what is the slope of this line? enter your answer in the box.