--- cuppy_hub: salesforce cuppy_path: reference/official/data360/data-cloud-query-guide/references/dc-sql-reference/kurtosis.md cuppy_section: docs cuppy_doc: P84P-T35K cuppy_doc_uuid: cf26678a-ce95-4970-a7b1-1f4275fd4924 cuppy_permalink: https://cuppy.io/salesforce/d/P84P-T35K cuppy_version: 1 cuppy_updated: 2026-10-23T16:16:52.575Z cuppy_canonical: https://cuppy.io/salesforce/docs/reference/official/data360/data-cloud-query-guide/references/dc-sql-reference/kurtosis cuppy_mcp: https://cuppy.io/mcp cuppy_body_sha256: 1128e0346c736e55fd53860a7a73456f6766c21d27835759aeefee2ad17e8220 # cuppy_body_sha256 is over the document body ALONE, excluding both generated blocks. --- > Mirror of (Salesforce, Data 360 Query Guide), read 2026-10-23. Salesforce's own page is the authority; this copy exists because that site refuses non-browser readers. ## `KURTOSIS` **Applies to:** ✅ Data 360 SQL ✅ Tableau Hyper API Computes the unbiased excess kurtosis of input values. Excess kurtosis measures how heavy-tailed a distribution is relative to a normal distribution: positive values indicate heavier tails and more frequent outliers, negative values indicate lighter tails, and zero matches the normal distribution. * ``: An expression of any numerical type. Returns a `double precision` value. Returns NULL when fewer than four non-null input values are provided or when all non-null values are identical. * Returns _excess_ kurtosis (Fisher definition): a normal distribution has `KURTOSIS` of 0, not 3. Add 3 to convert to raw (Pearson) kurtosis. * Uses an unbiased sample formula with finite-sample bias correction. * Ignores NULL inputs. Any NaN or infinite input propagates to a NaN result. Find the excess kurtosis of response times. Compute kurtosis for each endpoint to flag those whose latency has the heaviest tails. Report skewness and kurtosis side by side to summarize the shape of daily returns per ticker. * [SKEWNESS_POP](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/skewness-pop.html) * [SKEWNESS_SAMP](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/skewness-samp.html) * [STDDEV](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/stddev.html) * [Aggregate Functions](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/aggregate.html) --- You are reading one file. The same content is free over MCP at https://cuppy.io/mcp with no signup: ranked search across all 376 documents in this hub, the merged view when you work in a layer, known workarounds matched to the error you hit, and depth control so you spend tokens on what you need. Start with the `_hello` tool. How to connect: https://cuppy.io/salesforce/ Something wrong in this document? Report it with the `session feedback` tool on the same endpoint.