The butterfly needle differs from the straight ordinary needle in some points, as butterfly needle is shorter having rubber wings on both sides to provide a good grip during handling and at the end it is connected to the collecting tubes.uidelines For Butterfly Needle Gauge Selection. When we want to draw blood and the regular straight needle is not ideal we use the butterfly needle for this job, the butterfly needle...
The Mean Value Theorem for Integrals states that there must be a point â¬ x in the interval [â¬ a, â¬ b] where the exact function value actually equals the average function value. That is, there is a solution to the equation f(x)= 1 b âa f(x) dx a b â«. We can find the point â¬ x several ways: (i) Find the average value â¬ c âby handâ and then solve f(x) = â¬
In mathematics and statistics, the mean is another name for the average. The mean is calculated by adding all of the values together, then dividing by the number of values. Example: 1, 2, 2, 100, 100 is a set of numbers or scores. If we add all the numbers, the answer is 205. By dividing this number by the number of numbers, we discover that the mean is 41. The difficulty with this particular set of numbers is that no one in this group scored anything like a 41, and the mean does not tell us much about what kind of scores these numbers represent.