A researcher is studying the amygdala (a part of the brain involved in emotion). Six participants in a particular fMRI (brain scan) study are measured for the increase in activation of their amygdala while they are viewing pictures of violent scenes. The activation increases are .43, .32, .64, .21, .29 and .51. Figure the (a) mean and (b) standard deviation for this sample of activation increases. (c) Explain what you have done and what the results mean to a person who has never had a course in statistics.