Battery life has a strong, negative, linear relationship with temperature. If the least-squares regression line using xx = temperature explains 90% of the variation in battery life, which of the following must be the correlation, rr, between battery life and temperature?

-0.95

Step-by-step explanation:

The value that explains the least-squares regression line is 90% or 0.9, and is also r^2.

You would just square root r^2 and get r=0.948. since the relationship is negative, r= -0.948, or -0.95

these sign is used to tell weather the number is greater or less than the number   <   or >     but this sign means its equal =    

hope this you and

step-by-step explanation: