32 lines
1.1 KiB
TypeScript
32 lines
1.1 KiB
TypeScript
import { Task, TaskCategory, TaskCategoryID } from "../models/task";
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import { Project } from "../models/project";
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import { TaskCategoriesTableProps } from "../routes/project/task-categories-table";
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export function getTaskWeightedMean(t: Task): number {
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return (t.estimations.optimistic + (4*t.estimations.likely) + t.estimations.pessimistic) / 6;
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}
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export function getTaskStandardDeviation(t: Task): number {
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return (t.estimations.pessimistic - t.estimations.optimistic) / 6;
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}
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export function getProjectWeightedMean(p : Project): number {
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return Object.values(p.tasks).reduce((sum: number, t: Task) => {
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sum += getTaskWeightedMean(t);
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return sum;
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}, 0);
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}
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export function getTaskCategoryWeightedMean(taskCategoryId: TaskCategoryID, p : Project): number {
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return Object.values(p.tasks).filter(t => t.category === taskCategoryId).reduce((sum: number, t: Task) => {
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sum += getTaskWeightedMean(t);
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return sum;
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}, 0);
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}
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export function getProjectStandardDeviation(p : Project): number {
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return Math.sqrt(Object.values(p.tasks).reduce((sum: number, t: Task) => {
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sum += Math.pow(getTaskStandardDeviation(t), 2);
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return sum;
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}, 0));
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} |