Part 5 – Problem 01: The data from PEER and the data from the given seed motion spreadsheet seem to have different time scales(i.e. The independent variable, T, has different sets of values for the two different sources. Are we expected to manipulate the PEER data and/or modify the spreadsheet?

You are not expected to manipulate and /or data or modify the spreadsheet. The given seed motions’ period (T) and pseudo-spectral acceleration were obtained using a different  method than what PEER is using, hence the discrepancy in the T values. it is okay to use a different set of T values for the response spectrum obtained from PEER.