50 48 47 ' 51 50 52 46 53 50 51 49 51 ' 46 49 48 51 47 48 48 50 46 l 49 50 48 47 He calculates the mean contents of his sample and discovers that it is indeed less than 50. With renewed vigour Nick les, a complaint to Ms Litty Gation, a Consumer Affairs ofcer, who is given a copy of Nick's letter together with his data. Litty's job is to investigate Nick's complaint. 1.1 Find the mean the mode and the median Nick's data. (6) 1.2 From the measures of central tendency calculated above, comment on the skewness of the data. (3) 1.3 Find the mean deviation of Nick's data (6) 1.4 Comment on the way that Nick obtained his sample. Explain whether or not you think it was appropriate. (5) REGENT BUSINESS SCHOOL (RBS) - July 2021 13