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Introduction (Mean, Median & Mode) Video Lecture | Crash Course: Class 10
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FAQs on Introduction (Mean, Median & Mode) Video Lecture - Crash Course: Class 10
| 1. What is the difference between mean, median, and mode? |  |
Ans.The mean is the average of a set of numbers, calculated by adding all the values and dividing by the number of values. The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers. The mode is the value that appears most frequently in a data set.
| 2. How do you calculate the mean of a given data set? | |
Ans.To calculate the mean, first add all the numbers in the data set to get the total sum. Then, divide this sum by the total number of values in the data set. For example, for the data set {2, 4, 6}, the mean would be (2 + 4 + 6) / 3 = 4.
| 3. In what situations is the median a better measure than the mean? | |
Ans.The median is a better measure than the mean when the data set contains outliers or extreme values that could skew the average. For example, in income data where a few individuals have very high incomes, the median will provide a more accurate reflection of the typical income than the mean.
| 4. How can you find the mode in a data set? | |
Ans.To find the mode, list all the values in the data set and count how many times each value appears. The value that occurs most frequently is the mode. If all values appear with the same frequency, then the data set has no mode or is considered multimodal if multiple values appear with the highest frequency.
| 5. Can a data set have more than one mode? | |
Ans.Yes, a data set can have more than one mode if two or more values occur with the highest frequency. Such data sets are called multimodal. For example, in the data set {1, 2, 2, 3, 3, 4}, both 2 and 3 are modes, making the data set bimodal.
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Nov 19, 2024 Last updated |
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