Effect sizes, ciphers, and header parse tools

Another hundred tools landed across ANOVA effect sizes and calibration metrics, Pig Latin and hashtag extractors, SHA-384 and entropy demos, UUencode and ROT47 encoding, HTTP header parsers, age-in-days helpers, and NPI or ISSN check digits—with twenty pages carrying extra SEO body blocks. Start here when you know the job, not the route name.

The latest Toolcore batch adds another hundred browser-local pages in ANOVA effect sizes and classification metrics, Pig Latin and hashtag extractors, SHA-384 and entropy demos, UUencode and ROT47 encoding, Retry-After and ETag header parsers, age-in-days calendar helpers, and NPI or ISSN check digits. Twenty high-intent routes also ship thicker About/How SEO sections—listed first below.

Twenty pages with extra SEO body (start here)

Partial eta-squared, paired t-test, and two-proportion z-test — effect sizes and proportion homework without a spreadsheet.
Brier score, Cohen kappa, and log loss — calibration and agreement metrics on pasted counts.
SHA-384 demo, entropy bits estimate, and UUencode encode — hash shape and legacy transport encoding demos.
Retry-After parse, ETag weak parse, and WWW-Authenticate parse — split curl traces and 401 challenges locally.
Pig Latin converter, hashtag extractor, age in days, and NPI format check — text cleanup and identifier columns in one pass.

Ciphers, Base64url, and ROT47

ROT47 cipher, Base64url decode, and Beaufort cipher — encoding and classical cipher homework beside the main Encoding hub.

Check digits and date countdowns

ISSN check digit, UPC-A format check, and countdown to date — retail identifiers and calendar countdown helpers.

Common use cases

Compute partial eta-squared or Brier score on pasted homework tables before opening a stats package.
Encode UUencode lines or decode Base64url text and parse Retry-After from curl output in the browser.
Extract hashtags from social drafts, count age in days between dates, or verify NPI digit rules locally.

Common mistakes to avoid

Using demo SHA-384 as production verification
Digest demo pages illustrate hash shape—they are not audited for side-channel resistance.
Treating NPI format checks as registry lookup
Pattern pages confirm Luhn and digit shape only—they do not query CMS provider databases.
Expecting Pig Latin to handle every locale
English word rules only—punctuation and non-Latin scripts may pass through unchanged.

FAQ

How does this batch differ from the Wilson interval batch?

That guide covered Wilson intervals, BLAKE2b demo, and Forwarded header parse. This set adds ANOVA effect sizes and classification metrics, Pig Latin and hashtag tools, SHA-384 and UUencode demos, Retry-After and ETag parsers, and NPI or ISSN check digits—with 20 pages carrying extra SEO body blocks.

Which pages have extra SEO thickening?

Twenty high-intent tools—including partial eta-squared, paired t-test lite, SHA-384 demo, Retry-After parse, and NPI format check—ship custom About/How sections via ToolPageSeoSupplement overrides.

Can agents prefill these tools?

Single text fields often accept q or qb. Multi-field number and date tools open without URL prefill.