Exhibit 9.1
The following questions are based on the problem description and spreadsheet below.
A company has built a regression model to predict the number of labor hours (Yi) required to process a batch of parts (Xi). It has developed the following Excel spreadsheet of the results. 
-Refer to Exhibit 9.1. Interpret the meaning of R Square in cell B3 of the spreadsheet.
Definitions:
Proactive Interference
The phenomenon where old memories hold back an individual from retaining new memories.
Hindsight Bias
The tendency to believe, after an event has occurred, that one would have predicted or expected the outcome, even though it was not predictable.
Hindsight Bias
The inclination to see events that have already occurred as being more predictable than they were before they took place.
Interference
A cognitive process where previously learned information hinders the ability to learn new information or the retrieval of information due to the non-helpful interaction between different pieces of information.
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