An R package for run charts and individuals control charts for statistical quality control and improvement. pbcharts implements the I prime (I’ or normalised I ...

Around 16,000 new species are described each year, but most animals and plants are listed as threatened as soon as they are ...

A guide with examples for learning this key idea in options trading Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive ...

Numberphile revived an ancient multiplication trick—halves and doubles—also called Egyptian or Russian math, where you repeatedly halve one number and double the other. After crossing out rows with ...

19 is only 1 away from 20, so you prefer to start by multiplying 20 times 5, which equals 100. Then we need to take away a squadron of 5, because there are actually only 19 squadrons, not 20. 100 take ...

convert the numbers from standard form into decimal form or ordinary numbers complete the calculation convert the answer back into standard form Calculate \((4 \times 10^9) \times (7 \times 10^{-3})\) ...

Minimal examples of data structures and algorithms in Python - keon/algorithms ...