1---
2version: 0.1.0
3precision: 4
4---
5# draftply Pro — Statistics, Finance & Matrices
6
7# Descriptive statistics over a list
8data = [4, 8, 15, 16, 23, 42]
9mean(data)
10median(data)
11std(data)
12
13# Correlation of two series
14corr([1, 2, 3, 4, 5], [2, 4, 5, 4, 6])
15
16# Finance — present & future value
17pv(0.05, 10, -100)
18fv(0.05, 10, -100)
19
20# Monthly payment of a 200,000 loan over 30 years at 5% p.a.
21pmt(0.05 / 12, 360, 200000)
22
23# Net present value & internal rate of return of a cash-flow series
24npv(0.08, [-1000, 400, 400, 400])
25irr([-1000, 400, 400, 400])
26
27# Matrices — , separates columns, ; separates rows
28A = [1, 2 ;; 3, 4]
29det(A)
30inv(A)
31A * A
32