Compute the average of a collection of values.

Input parameters:

1. Vl → Collection of values.
2. Al → Mean algorithm.
   • 0 → Arithmetic
   • 1 → Geometric
   • 2 → Harmonic
   • 3 → Lagrangian
   • 4 → Entropy
3. Cl → The confidence level, or desired likelihood of the confidence region containing the true mean.

Output parameters:

1. Mn → Average of collection.
2. Cf → Confidence region for the true mean. An interval for numbers, a rectangle for complex numbers, and a box for points and vectors.