Measures of Center in Numerical Data The measures of center used to analyze data obtained from a market research are: Mean, median and mode. Mean : It’s the “average” number, found by adding all data points and dividing it by the number of data points. For example, the mean of: 3, 4, 6, 7, 1, 9, 8, 2 = (3+4+6+7+1+9+8+2)/8 = 40/8 = 5 Median : It’s the middle number, found by ordering all data points and picking out the one in the middle. (If there are two middle numbers, you take the mean (average) of those two numbers. For example, the median of: 150, 200, 175, 160, 220, 125, 195 125, 150, 160, 175 , 195, 200, 220 11, 26, 31, 15, 45, 35, 60, 54 11, 15, 26, 31, 35, 45, 54, 60 (31+35)/2 33 Mode: It’s the most frequent number, that is the number that appears the highest number of times. For example, the mode of: 0.20, 0.25, 0.20, 0.15, 0.20, 0.25, 0.18, 0.20 0.20 Exercises: Calculate the mean, median and mode of the fol...