Variance
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What is Variance?
Variance measures the average squared deviation of each value from the mean. It quantifies how much the data points differ from the average. A higher variance indicates greater spread. Variance is the basis for standard deviation and many inferential statistical tests.
Free resources to learn Variance
- ArticleWhat is Variance?
- ArticleHow to Calculate Variance
More in stage 9: Descriptive Analysis
Variance: common questions
Can I learn Variance in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain Variance in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this Variance tutorial for beginners?
It is lesson 46 of 100 in the free Data Analyst roadmap, in stage 9, Descriptive Analysis. If you are new to Data Analyst, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.