Class 10 Exam > Class 10 Videos > 02 - Mean Of Grouped Data - Direct Method (Problem Solving) - Statistics - Class 10 - Maths
02 - Mean Of Grouped Data - Direct Method (Problem Solving) - Statistics - Class 10 - Maths Video Lecture
FAQs on 02 - Mean Of Grouped Data - Direct Method (Problem Solving) - Statistics - Class 10 - Maths Video Lecture
| 1. What is the direct method of finding the mean of grouped data? |  |
Ans. The direct method of finding the mean of grouped data involves finding the product of each midpoint of the class intervals with their respective frequencies. Then, the sum of these products is divided by the total frequency of the data to get the mean.
| 2. How is the direct method different from the assumed mean method of finding the mean of grouped data? | |
Ans. The direct method involves using the midpoint of each class interval to find the mean, whereas the assumed mean method involves assuming a value within the data and using it as the mean. The direct method is more accurate and preferred when the exact values are known.
| 3. When is the direct method used to find the mean of grouped data? | |
Ans. The direct method is used to find the mean of grouped data when the exact values of the data are known, and the frequency distribution is given. It is particularly useful when the data is presented in intervals or classes.
| 4. Can the direct method be used for finding the mean of ungrouped data? | |
Ans. No, the direct method is specifically used for finding the mean of grouped data. For ungrouped data, other methods like the step deviation method or the assumed mean method are used to calculate the mean.
| 5. Is the direct method the most accurate method for finding the mean of grouped data? | |
Ans. Yes, the direct method is considered the most accurate method for finding the mean of grouped data. It takes into account the exact values of the data and their frequencies, providing a more precise estimate of the mean compared to other methods.
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Nov 22, 2024 Last updated |
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