A useful mean in the physical sciences (such as voltage) is the quadratic mean (QM), which is found by taking the square root of the average of the squares of each value. The formula is
The quadratic mean of 3, 5, 6, and 10 is
Find the quadratic mean of 8, 6, 3, 5, and 4.
Answer to relevant QuestionsAn approximate median can be found for data that have been grouped into a frequency distribution. First it is necessary to find the median class. This is the class that contains the median value. That is the n / 2 data ...The amount of garbage in millions of tons collected over a 16-year period is shown. The number of people killed in each state from passenger vehicle crashes for a specific year is shown. Find the range, variance, and standard deviation unless the question asks for something different. Assume the data ...The data represent the murder rate per 100,000 individuals in a sample of selected cities in the United States. Class Frequency 5–11......8 12–18...... ...The mean of a distribution is 20 and the standard deviation is 2. Use Chebyshev’s theorem. a. At least what percentage of the values will fall between 10 and 30? b. At least what percentage of the values will fall between ...
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