Should Arsenal Fans Be Worried About This Goal Stat?

We're only two games in, but this doesn't look great.
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We're only two games in, but this doesn't look great.

We're only two games into the season, but Arsenal have failed to get off to the start many were expecting them to. With an opening weekend loss at West Ham and a narrow victory over Crystal Palace, Wenger's men have left themselves with some catching up to do.

This stat proves just how unlucky the Gunners have been in front of goal so far. With the most attempts on goal from any Premiership club, but a minus goal difference, something obviously isn't clicking so far. 

Is this proof Wenger needs to invest in a goalscorer up front before the transfer window is over?