Find the median of a data set with an even number of data points. Arrange the data points in ascending order of value. The median will be the sum of the two middle data points divided by 2. For example, the median of the data set {1, 2, 2, 3, 4, 5} is (2 + 3)/2 = 2.5. Calculate the mode of a data set. The mode is defined as the value in the data set that occurs most often. If more than one value occurs an equal number of times, all of these values are modes for the data set. For example, 2 and 3 are both modes for the data set (1, 2, 2, 3, 3, 4).
Orlando typically experiences a dramatic upward swing in rainfall from May to June. During June, nearly twice as much rain falls (almost 7.50 inches) when compared to May (3.75 inches). In addition, rainfall since April 1 has been lacking. Orlando has received only 40 percent of their normal rainfall since the start of April.
The rainy season in Johannesburg begins in October and continues through April, with intermittent mild showers occurring throughout that season. Winters are very dry, generally mild with cold clear evenings and bright, sunny days with mild to warm temperatures. Snow and rain in the winter time are almost unheard of. Travelers interested in spending time in the area during the local events and festivals which characterize the culture there will probably find that autumn is the season to head to Johannesburg. Many art festivals take place there at that time.