Yes, a stem-and-leaf plot shows the frequency distribution of a variable.
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Yes, in the sense that each leaf represents a frequency of one.
They can be created but, because histograms are generally plots of frequency density, rather than frequency, they are likely to be quite difficult to interpret.
Frequency and cumulative frequency are two types of frequency distributions. These are frequency tables that show statistical data for different types of frequencies that include absolute, relative, and cumulative frequencies. There are mathematical formulas used to calculate these frequencies.
Yes because they organize data in a way that somebody can read it.
Not directly, but the cumulative frequency contains the same information as the frequencies for the values in question. However, it may not show the full details of the distribution if the values have been grouped.