different histogram formats stacked histograms format how to compare stacked histogram dataset how to compare multiple histograms what is stacked histogram how to compare histograms in r stacked histograms in r stacked histogram r r how to compare two stacked histograms where is the data format in r what kind of histogram is shown in the chart stacked histogram how to evalue stacked histograms in r what is stacked histograms stacked histograms how to compare what is the dataset used to compute histograms how to evaluate multiple datasets what is the data set to compare stacked histograms how to compare multiple numerical datasets which is higher the value of the r dataset or the similarity or difference between two stacked histograms?