Misleading statistic. You could have millions in savings and have nothing in a savings account, especially with savings accounts offering virtually nil in interest. At one point at I had $40K in cash and investments without a penny in an actual savings account.
The better stat would be what people have saved up in Money Markets, Investment/Trading accounts, and Checking Accounts. But that's not how the question has been phrased in any of the articles I've read on it.