To get those values, you would need a dataset including the starting salaries of a large number of medical school graduates. Then, you could calculate:
* Expected Starting Salary (Mean): The average of all the starting salaries in your dataset. This would give you a more realistic representation of typical starting salaries, rather than focusing on a single, potentially outlier, high salary.
* Standard Deviation: A measure of how much the individual starting salaries deviate from the mean. A high standard deviation indicates a large variation in starting salaries, while a low standard deviation indicates salaries are clustered closely around the average. There are many ways to calculate the standard deviation (population vs. sample), readily available using statistical software or spreadsheets.
In short: $300,000 is just one possible starting salary. It's not representative of the whole population of medical school graduates. You need more data to answer your question.