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2. A sample of 20 analysts was asked to predict the price of a particular stock for the following week. The results are summarised in
2. A sample of 20 analysts was asked to predict the price of a particular stock for the following week. The results are summarised in the following table: Stock price (RM) 1.00-1.02 1.03-1.05 1.06-1.08 1.09-1.11 Number of analysts 4 8 6 2 (a) [3] (b) Construct a histogram for the data above. Find the sample mean, mode, median, range, interquartile range, variance, standard deviation, and coefficient of variation of the prediction. Are there outliers in the data above? If there are outliers, what numerical measures would be unstable? [20] (c) [5] 2. A sample of 20 analysts was asked to predict the price of a particular stock for the following week. The results are summarised in the following table: Stock price (RM) 1.00-1.02 1.03-1.05 1.06-1.08 1.09-1.11 Number of analysts 4 8 6 2 (a) [3] (b) Construct a histogram for the data above. Find the sample mean, mode, median, range, interquartile range, variance, standard deviation, and coefficient of variation of the prediction. Are there outliers in the data above? If there are outliers, what numerical measures would be unstable? [20] (c) [5]
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