<image 1> Table 11.47 provides a recent survey of the youngest online entrepreneurs whose net worth is estimated at one million dollars or more. Their ages range from 17 to 30. Each cell in the table illustrates the number of entrepreneurs who correspond to the specific age group and their net worth. We want to know whether the ages and net worth independent. $\chi $2 test statistic = ______
['1.56', '1.76', '1.96', '2.06']