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Correlation Video Lecture | Statistics for Economics - Class XI - Commerce
FAQs on Correlation Video Lecture - Statistics for Economics - Class XI - Commerce
| 1. What is correlation? |  |
Ans. Correlation is a statistical measure that determines the relationship between two variables. It helps to understand how changes in one variable are associated with changes in another variable. Correlation can range from -1 to +1, where -1 indicates a perfect negative correlation, +1 indicates a perfect positive correlation, and 0 indicates no correlation.
| 2. How is correlation calculated? | |
Ans. Correlation is calculated using the correlation coefficient, which is a numerical value between -1 and +1. The most common method to calculate correlation is Pearson's correlation coefficient. It is calculated by dividing the covariance of the two variables by the product of their standard deviations.
| 3. What does a positive correlation indicate? | |
Ans. A positive correlation indicates that as one variable increases, the other variable also tends to increase. In other words, there is a direct relationship between the two variables. For example, if there is a positive correlation between studying hours and exam scores, it means that as the number of studying hours increases, the exam scores also tend to increase.
| 4. What does a negative correlation indicate? | |
Ans. A negative correlation indicates that as one variable increases, the other variable tends to decrease. In other words, there is an inverse relationship between the two variables. For example, if there is a negative correlation between temperature and snowfall, it means that as the temperature increases, the amount of snowfall tends to decrease.
| 5. Can correlation imply causation? | |
Ans. No, correlation does not imply causation. Just because two variables are correlated, it does not necessarily mean that one variable causes the other to change. Correlation only indicates the strength and direction of the relationship between the variables, but it does not provide any information about the cause-and-effect relationship.
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Video Description: Correlation for Commerce 2025 is part of Statistics for Economics - Class XI preparation.
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Video Lecture & Questions for Correlation Video Lecture | Statistics for Economics - Class XI - Commerce - Commerce full syllabus preparation | Free video for Commerce exam to prepare for Statistics for Economics - Class XI.
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