One. Groups 1 accuracy (accurate) for most of the 3 groups because the data are distributed close to the mass of the object to be weighed is most similar 38 g. Much as possible.
1. Group 1 are correct (accurate). Among the three groups because of the fragmented information that is closest to the object's mass is weighing the most nearby g. 38.
1. There are 1 groups of invalid (accurate) and most of the group 3 because the information is spread out over the mass of the object in close proximity to the most accurate weight measurement is close by 38 g. More.