flagon-io/automation-lab

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1	1		# automation lab
	2	+
	3	+	## Functions
	4	+
	5	+	All functions are exported from `math.js`.
	6	+
	7	+	```js
	8	+	const { add, multiply, power, mean, median, standard_deviation } = require("./math");
	9	+	```
	10	+
	11	+	- `add(a, b)`: returns the sum of `a` and `b`.
	12	+	```js
	13	+	add(2, 3); // 5
	14	+	```
	15	+	- `multiply(a, b)`: returns the product of `a` and `b`.
	16	+	```js
	17	+	multiply(4, 5); // 20
	18	+	```
	19	+	- `power(base, exponent)`: returns `base` raised to a whole-number `exponent`; throws a `RangeError` if `exponent` is negative.
	20	+	```js
	21	+	power(2, 3); // 8
	22	+	```
	23	+	- `mean(numbers)`: returns the average of an array of numbers; throws a `TypeError` if the array is empty.
	24	+	```js
	25	+	mean([1, 2, 3, 4]); // 2.5
	26	+	```
	27	+	- `median(numbers)`: returns the middle value (the average of the two middle values when the length is even); throws a `TypeError` if the array is empty.
	28	+	```js
	29	+	median([3, 1, 2]); // 2
	30	+	median([1, 2, 3, 4]); // 2.5
	31	+	```
	32	+	- `standard_deviation(numbers)`: returns the population standard deviation; throws a `TypeError` if the array is empty.
	33	+	```js
	34	+	standard_deviation([2, 4, 4, 4, 5, 5, 7, 9]); // 2
	35	+	```