Schweser Practice Test 1 Volume II #37

Question gives 7 EPS data points to normalize P/E and asks you to Estimate the 7th year. It then proceeds to use only six of the data points for the normalization estimate on year 7.

I couldn’t find another example like this where one data point was left off in the calculation. So, I’m thinking it is either an error or the key word is estimate. Thoughts?