In a study of the size of frogs, group I consists of five frogs whose average (arithmetic mean) length is 4.7 centimeters. Group II consists of five frogs whose lengths are 4.3, 4.6, 4.7, 4.8, and 5.1 centimeters.

#### Quantity A

The standard deviation of the lengths of the five frogs in group I

#### Quantity B

The standard deviation of the lengths of the five frogs in group II