PSY3401 Practice 2 Name: Q1. For the following frequency distribution. (each block represents one unit) b} c) a) reassures: iialioiox Inaassroex 1) Find the mean, median, and mode of those frequency distributions. 2) For each distribution, which measure of central tendency should be use? 3) For distribution a), if we add 1 to each score of X (for example, score 2 changes to 3, 3 changes to 4, et al.), please draw the histogram by hand, compare it with the original one, and how its mean changes