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keyword

3 sigma definition

Monthly search volume and cost-per-click data for "3 sigma definition" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=3+sigma+definition&country=us" +--------------+------------------+ | volume | 40 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-06-16 | +--------------+------------------+
All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
3 sigma 1,600 $0 20/20
3 sigma standard deviation 1,600 $0 13/20
three sigma percentage 880 $0 13/20
what is 3 sigma 210 $0 15/20
3 sigma rules 210 $0 12/20
3 sigma probability 110 $0 12/20
3 sigma meaning 70 $0 15/20
3-sigma meaning 70 $0 15/20
what does 3 sigma mean 40 $0 15/20
mean 3 sigma 40 $0 13/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=3+sigma+definition&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt