Final answer:
The mean average number of arms per person in Britain, as in any population, is expected to be just slightly less than two, considering the vast majority of individuals have two arms. Precise calculations would require demographic data accounting for variations due to amputations, congenital anomalies, or other relevant factors.
Step-by-step explanation:
The question asks about calculating the mean average number of arms per person in Britain. To find the mean average, one would typically sum the total number of arms in the population and divide that by the total number of people. However, since almost all people have two arms, barring accidents or birth defects, the mean average number of arms per person in any population, including Britain, is very close to two. Nonetheless, to obtain a precise figure, one would need data on the entire population taking into account those with fewer than two arms or more, if that applies due to medical conditions.
While this question might seem a bit unusual, it uses the concept of arithmetic mean, which is a fundamental statistical measure in the field of mathematics. To calculate it, you sum up a set of numbers and then divide the sum by the count of numbers. In this case, most individuals have two arms, so the arithmetic mean for the general population is expected to be just slightly less than two.