answer all questions with explanation and don't make random guess

If you are doing a 7 factor experiment. each with 2 levels, and do no replication. How many degrees of freedom (for error) will you have? If instead you do 5 replicates, how many degrees of freedom (for error) would you have now? [ 1 What things can help in collecting additional data? [:1 Less factors, more replicates C] Center Points U Running a control measurment [:1 Duplicating results already collected Cl Averaging 2 or more data points [3 Blocks Cl None of the above