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Unit to measure water in an eye dropper?
What measurements units would be best to measure the amount of wanter in and eye dropper
Which measure of central tendency best describes each situation?
by getting the mean and multiply by the median
Which One side of a square is represented by 5y. Which polynomial expression BEST represents the area of the square?
Area of square: 25y^2
What is the perimeter of an ellipse if the major axis is 30MM and the minor axis is 12MM?
A simple question with a horrendously complicated answer. Short of carrying out elliptical integrals, the best I can suggest is the Ramanujan approximation according to which: Perimeter = pi*{3(a + b) - sqrt[10ab + 3(a2 + b2)]} where a and b are the semi-major and semi-minor axes. Substituting a = 15 mm and b = 6 mm gives Perimeter = 69.04 mm. A quick and easy, but roughly approximate method is as follows: The ellipse is between a circle of diameter 30 mm and one of 12 mm. Averaging these two gives a diameter of 21 mm. A circle with a 21 mm diameter has a circumference (perimeter) of 65.97 mm.
How do you find the best measure of central tendency when using outliers?
A weighted mean is probably best. Certainly better than a median which throws away information from most of the observations.
