Here's question and answer. Could u explain why it's not weak form efficient? I saw it was past information and should be weak form.

Question 3 (RWJJ Ch13, Q5) A stock market analyst is able to identify mispriced stocks by comparing the average price for the past 10 days to the average price for the last 60 days. If this is true, what do you know about the market? Solution 3 FINC301 EMH Tutorial Solutio The market is not weak form efficient