Statistics

      1. Find the mean for the given sample data. 1, 5, 8, 12, 15, 19 2. Find the standard deviation for the above sample data. Round the answer to 1 decimal places       3. Find the median for the following samples a) 5, 19, 27, 9, 30, 23, 15 b) 19, 27, 10, 28, 17, 40, 32, 25 _ 4. Find the mean of the data summarized in the given frequency distributions, X. Round the answer to 2 decimal places. Class limits Class middle point Xi Frequency fi Xi ´ fi 6 – 8 5 9 -11 2 12 – 14 4 15 – 17 1 åfi = åXi ´ fi = _ åXi ´ fi X = --------------- = åfi