<unk> <unk> <unk> <unk> <unk>  Passage: An experimental study involves taking measurements of the system under study, manipulating the system, and then taking additional measurements using the same procedure to determine if the manipulation has modified the values of the measurements. Passage: An experimental study involves taking measurements of the system under study, manipulating the system, and then taking additional measurements using the same procedure to determine if the manipulation has modified the values of the measurements. ️<unk>️<unk>️<unk>️<unk>️ <unk> <unk> <unk> <unk> <unk>  Question: What is being investigated?
correlations between predictors and response