The positioning of different endocrine glands within the human body can be illustrated as follows:
Match the hormone with its site of production:

| Hormones | Chemical Nature |
|---|---|
| A) Insulin | IV) Protein |
| B) Estrogen | I) Steroid |
| C) Oxytocin | II) Peptide |
| D) Thyroxine | III) Amine |
Find the mean deviation about the mean for the data 38, 70, 48, 40, 42, 55, 63, 46, 54, 44.