This is a histogram whose bar height represents the total of a frequency and all the frequencies below it in a frequency distribution.?

The histogram described is known as a cumulative frequency histogram. In this type of histogram, each bar represents the cumulative total of frequencies up to and including that interval, allowing viewers to see the accumulation of data points across the distribution. This visualization helps in understanding how frequencies build up to the total across the dataset. It is particularly useful for determining percentiles and assessing the distribution's overall shape.