One of the methods for determining mode is(a) Mode = 2 Median -3 Mean(...
Determining Mode
Introduction
Mode is a statistical measure that represents the value or values that occur most frequently in a data set. It is a useful tool for understanding the central tendency of a set of data. There are several methods for determining the mode, but one common method is to compare the median and mean of the data set.
Method
The method for determining the mode using the median and mean is as follows:
Step 1: Calculate the median of the data set.
Step 2: Calculate the mean of the data set.
Step 3: Use the formula Mode = 3 Mean - 2 Median.
Explanation
The formula Mode = 3 Mean - 2 Median is derived from the relationship between the mode, median, and mean of a data set. By subtracting 2 times the median from 3 times the mean, we can determine the value or values that occur most frequently in the data set.
Example
Let's consider an example to understand the method better. Suppose we have a data set of the following values: 2, 4, 4, 6, 6, 6, 8, 10.
Step 1: Calculate the median.
Since the data set has 8 values, the median will be the average of the 4th and 5th values, which are both 6.
Step 2: Calculate the mean.
The mean is calculated by adding up all the values and dividing by the total number of values. In this case, the mean is (2+4+4+6+6+6+8+10)/8 = 46/8 = 5.75.
Step 3: Calculate the mode using the formula Mode = 3 Mean - 2 Median.
Substituting the values we calculated, Mode = 3(5.75) - 2(6) = 17.25 - 12 = 5.25.
Therefore, the mode of the given data set is 5.25.
Conclusion
The method of determining mode using the formula Mode = 3 Mean - 2 Median is a simple and effective way to find the value or values that occur most frequently in a data set. It is important to note that this method may not always yield a precise value, especially if the data set has multiple modes or if the data is not normally distributed. However, it provides a good estimate and can be a useful tool in statistical analysis.
One of the methods for determining mode is(a) Mode = 2 Median -3 Mean(...
Answer is b
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