Consider the Wave dataset containing angular measurements corresponding to minimal acoustic pressure in ultrasonic radiation fields. Perform the following analyses:
a) Determine the mean directions of the TRa and TRb measurement sets.
b) Show that both measurement sets support at a 5% significance level the hypothesis of a von Mises distribution.
c) Compute the 95% confidence interval of the mean direction estimates.
d) Compute the concentration parameter for both measurement sets.
e) For the two transducers TRa and TRb, compute the angular sector spanning 95% of the measurements, according to a von Mises distribution.