How to Calculate the Median. The median is the middle score of a distribution. Consider this set of numbers: 5, 7, 9, 9, 11. Since you have an odd number of scores, the median would be 9. Now, what happens when you have an even number of scores so there is no single middle score. Consider this set of numbers: 1, 2, 2, 4, 5, 7. Since there are an even number of scores, you need to take the average of the middle two scores.
The platypus (Ornithorhynchus anatinus) also known as the duck-billed platypus is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania.
The Platypus (Ornithorhynchus anatinus) is a semi-aquatic mammal  endemic to eastern Australia and Tasmania.Together with the  short-beaked and long-beaked echidna, it is o â¦ ne of the three  species of monotremes, the only mammals that lay eggs instead of  giving birth to live young.o, the platypus is completely carnivorous. It does not eat plant matter at all, but feeds on annelid worms, tiny shrimp and annelid worms that live at the bottom of freshwate â¦ r creeks and rivers. It does not eat vegetation.