you use a line of best fit for 5 diffrent sets of data to make a prediction about an unknown value. the correlation coefficient for your data sets are shown. how confident can you be that your predicted value will be reasonably close to the actual value? match the correlation coefficient to the correct interpretation of the value.
r=0.328 blank, r=-7.2 blank, r=0 blank, r=0.832 blank, r=-1 blank,
Answer
I can be very confident; it will be close but it probably won't be exact.
I can't be confident at all; this about as close to a random guess as you can get.
I can be certain that my predicted value will match the actual value exactly.
I cannot be very confident; it might be close, or it might be way off.
This is an impossible value for r.
r=0.328 I cannot be very confident; it might be close, or it might be way off.
r=-7.2 This is an impossible value for r.
r=0 I can't be confident at all; this about as close to a random guess as you can get.
r=0.832 I can be very confident; it will be close but it probably won't be exact.
r=-1 I cannot be very confident; it might be close, or it might be way off.