<prompt> The number of fluorosis cases reported during the last years in a town are 250, 320, 190, 300, 5000, 100, 260, 350, 320, and 160. The epidemiologist wants to find out the average number of fluorosis cases reported in that town during the last 10 years. The most appropriate measure of average for this data will be:Arithmetic meanModeMedianGeometric mean  <response>: In the given question,Incidence of fluorosis in an area is 250, 320, 190, 300, 5000, 100, 260, 350, 320, and 160.And, incidence in ascending order is 100, 160, 190, 250, 260, 300, 320, 320, 350, 5000.Mean 725010 725Median Mean average of 5th and 6th value 260 3002 280Mode 320Since extreme values outliers are present for incidence 20 and 5000, mean will not be an appropriate measure of central tendency, Thus, median will be the most suitable measure of central tendency. 