MHB Equation Meaning: Sigma Explained

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Sigma represents the concept of summation in mathematics, particularly in calculating the mean of a set of data values. Given n data points, the mean is determined by summing all values and dividing by n. The discussion suggests that the sigma symbol can be interpreted as a call to "be above average." This interpretation emphasizes striving for excellence beyond the typical mean. Understanding sigma in this context highlights its significance in both statistics and personal development.
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View attachment 6391 I know what sigma is, but is there a specific meaning?
 

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If given $n$ data values $x_1\cdots x_n$, then the mean or average of those values is the sum of those values divided by the number of data values (which is $n$), so it is likely this logo means:

Be above average.
 

Thread 'Trigonometry problem of interest'

Seemingly by some mathematical coincidence, a hexagon of sides 2,2,7,7, 11, and 11 can be inscribed in a circle of radius 7. The other day I saw a math problem on line, which they said came from a Polish Olympiad, where you compute the length x of the 3rd side which is the same as the radius, so that the sides of length 2,x, and 11 are inscribed on the arc of a semi-circle. The law of cosines applied twice gives the answer for x of exactly 7, but the arithmetic is so complex that the...
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