You use a line of best fit for set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0.015. How confident can you be that your predicted value will be reasonably close to the actual value?

Question

You use a line of best fit for set of data  to make a prediction about an unknown value. The correlation coefficient  for your data set is -0.015. How confident can you be that your predicted value will be reasonably close to the actual value?

anonymous · Answer

Medal for anyone who can help

directrix · Answer

Look at the attachment.

directrix · Answer

The given correlation of -0.015 is close to zero which is no correlation.

You need a correlation coefficient on up toward 1 or -1 to have any confidence in the data trend.  @Ella_Bear_

anonymous · Answer

@directrix can you help with another one?

directrix · Answer

Post the question in a new thread and I will try to help.