in Probability and Statistics.
The most common type of average is the arithmetic mean, often simply called the mean. The arithmetic mean of two numbers, such as 2 and 8, is obtained by finding a value A such that 2 + 8 = A + A. It is then simple to find that A = (2 + 8)/2 = 5. Switching the order of 2 and 8 to read 8 and 2 does not change the resulting value obtained for A. The mean 5 is not less than the minimum 2 nor greater than the maximum 8. If we increase the number of terms in the list for which we want an average, we get, for example, that the arithmetic mean of 2, 8, and 11 is found by solving for the value of A in the equation 2 + 8 + 11 = A + A + A. It is simple to find that A = (2 + 8 + 11)/3 = 7.
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Finding The Mean Of A Data Set Video Clip
Finding The Mean Of A Data Set
Video Clip Length:
3 minutes 5 seconds
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This tutorial will help you learn how to find the mean or average of a given data set. You need to memorize the formula to find the average. You must combine the given numbers in your data, then divide by the quantity of numbers in your set. You will also learn how to show a fraction as division in order to get your mean.
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- The mean of a normal distribution is 100 and the standard deviation is 15. Find the value of separating the top 85% from the others.
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