Question 4 (6 marks) A researcher had conducted a survey on three different groups of consumers (A, B and C) to determine the level of satisfaction for a particular product. The results (in percent) were summarized as follows: Statistical Measures A B C Mean 80 60 60 Median 70 60 70 Mode 60 60 80 Standard deviation 12 8 10 State the skewness for each groups and explain what you observe from the above information