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Data Visualizationmedium
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A histogram of continuous data has four bins with the following class intervals and frequencies: [10,20)[10, 20) with frequency 66; [20,30)[20, 30) with frequency 1414; [30,40)[30, 40) with frequency 1515; and [40,50)[40, 50) with frequency 55. What is the estimated mean of this grouped dataset?