Given these assumptions, we know the following. 1  The expected value of the difference between all possible sample means is equal to the difference between population means. 2  Thus, E(x 1 - x 2) = Î¼ d = Î¼ 1 - Î¼ 2. 3  The standard deviation of the difference between sample means (Ï d) is approximately equal to:
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n/a. The highest average temperature in Branson is June at 76.1 degrees. The coldest average temperature in Branson is January at 0 degrees. The most monthly precipitation in Branson occurs in January with 0 inches. The Branson weather information is based on the average of the previous 3-7 years of data.Loading...he Branson, MO air quality index is 62.8% less than the Missouri average and 27.6% less than the national average.