As the average of the squared differences from the mean , what is the variance?

4.7, 5.2, 5.3, 5.5, 5.5, 5.6, 5.8, 5.9, 5.9, 6.0, 6.0, 6.1, 6.1, 6.2, 6.2, 6.3, 6.3, 6.3, 6.4, 6.4, 6.4, 6.5, 6.5, 6.6, 6.6, 6.7, 6.8, 6.9, 7.0, 7.2