{"ok":true,"tool":"Standard Deviation Calculator","operation":"calculate-standard-deviation","description":"Calculate standard deviation, variance, mean, median, and range of a dataset.","method":"POST","endpoint":"/api/standard-deviation-calculator","webUrl":"https://toolhub-5eo.pages.dev/tools/standard-deviation-calculator","parameters":{"type":"object","properties":{"numbers":{"type":"array","items":{"type":"number"},"description":"List of numbers, or a string of numbers separated by commas or spaces"},"sample":{"type":"boolean","description":"Sample (n−1) vs population (n); default true"}},"required":["numbers"]},"response":{"type":"object","properties":{"count":{"type":"number"},"mean":{"type":"number"},"median":{"type":"number"},"sum":{"type":"number"},"min":{"type":"number"},"max":{"type":"number"},"range":{"type":"number"},"variance":{"type":"number"},"standardDeviation":{"type":"number"},"sample":{"type":"boolean"}}},"example":{"request":{"numbers":[2,4,4,4,5,5,7,9],"sample":true},"response_shape":{"type":"object","properties":{"count":{"type":"number"},"mean":{"type":"number"},"median":{"type":"number"},"sum":{"type":"number"},"min":{"type":"number"},"max":{"type":"number"},"range":{"type":"number"},"variance":{"type":"number"},"standardDeviation":{"type":"number"},"sample":{"type":"boolean"}}}},"howToCall":"POST a JSON body to https://toolhub-5eo.pages.dev/api/standard-deviation-calculator. Returns {\"ok\":true,\"result\":{...}} on success or {\"ok\":false,\"error\":\"...\"} on failure. No auth, CORS-enabled.","parametersSummary":"  numbers (array, required) — List of numbers, or a string of numbers separated by commas or spaces\n  sample (boolean, optional) — Sample (n−1) vs population (n); default true","curlExample":"curl -X POST https://toolhub-5eo.pages.dev/api/standard-deviation-calculator -H \"Content-Type: application/json\" -d '{\"numbers\":[2,4,4,4,5,5,7,9],\"sample\":true}'"}