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keyword

sigma notation

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

$ curl "https://app.seodata.dev/v1/keyword?q=sigma+notation&country=us" +--------------+------------------+ | volume | 14,800 | | cpc | $0 | | competition | 0 | | country | US | | updated | 2026-05-18 | +--------------+------------------+

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword volume cpc overlap
sigma math 8,100 $0 20/20
sum notation 8,100 $7.01 19/20
summation notation 8,100 $0 17/20
sigma notation formula 1,300 $0 20/20
sigma math definition 1,300 $0 19/20
math sum symbol 1,300 $0 18/20
sigma definition math 1,300 $0 17/20
sigma math meaning 1,300 $0 17/20
sigma meaning in math 1,300 $0 17/20
summation symbol in math 590 $0 18/20

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://app.seodata.dev/v1/keyword?q=sigma+notation&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 1,000/month

Full API spec: llms.txt