1 A group of occupational hygienists wanted to estimate the level of our dust in Norwegian bakeries. The following data (mg/m3) represents measurements from 16 bakeries in Hordaland. 0.61, 0.32, 0.35, 0.09, 0.56, 0.09, 0.13, 1.57, 2.34, 0.51, 1.58, 155, 1.10, 2.43, 0.20, 0.29. a) Calculate the mean, median and mode for these data. What would you use as the best measure of the central tendency in these data and why? b) The standard deviation (SD) of these data is 1.85. What is the standard error of mean (SEM)? What are the standard deviation and the standard error of mean describing