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Variance - How To Calculate Variance Video Lecture | Mathematics (Maths) for JEE Main & Advanced
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FAQs on Variance - How To Calculate Variance Video Lecture - Mathematics (Maths) for JEE Main & Advanced
| 1. How do you calculate variance? |  |
| 2. What is the significance of variance in statistics? | |
Ans. Variance measures the dispersion of a set of data points around their mean. It helps in understanding the spread or variability of the data, which is crucial in statistical analysis.
| 3. Can variance be negative? | |
Ans. No, variance cannot be negative. It is always a non-negative value since it involves squaring the differences between data points and the mean.
| 4. How is variance different from standard deviation? | |
Ans. Variance is the square of the standard deviation. While variance gives the spread of data in squared units, the standard deviation provides a more interpretable measure of dispersion in the same units as the data.
| 5. How can variance help in decision-making processes? | |
Ans. Variance helps in identifying the consistency or variability of data. It assists in making informed decisions by providing insights into the stability and predictability of outcomes based on the given data set.
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