dataSet: number[],
dataSetAverage: number = average(dataSet)
): number => {
- if (Array.isArray(dataSet) && dataSet.length === 0) {
- return 0
- } else if (Array.isArray(dataSet) && dataSet.length === 1) {
+ if (Array.isArray(dataSet) && (dataSet.length === 0 || dataSet.length === 1)) {
return 0
}
return Math.sqrt(