The Weighting Pre‐processing

We use the function get_state from the lesson Visual Exploration of the Qubit State. It takes the angle theta and returns a valid quantum state. An angle of $0$ denotes the state $|0\rangle$, which is the probability of $100\%$ measuring 0. An $\pi$ denotes the state $|1\rangle$, the probability of $100\%$ measuring 1.

Accordingly, we multiply the overall probability we calculate at line 14 with pi to specify an angle up to $\pi$ in line 17. Since the correlation coefficients are between -1 and 1 and most of our coefficients are negative, a value of $\mu$ towards -1 implies that the passenger died. Thus, we reverse the angles by calculating (1-mu)*pi.