A histogram is a chart comprising bars but, unlike an ordinary bar chart, the widths (intervals) of the bars are different and their heights represent the frequency densities, not frequencies.
Yes.
You can estimate the median and the mean.
comparison between histogram equalization and histogram matching?
mode
You can estimate them both.
You can estimate them both.
What is a shape of a histogram?
Histogram is a noun.
The prefix of "histogram" is "histo-".
A right or positive skew means the data in the histogram will tail out to the right. See the related link figure 15.6 and it shows a right skew.
I don't know what is histogram
You need to add all the values shown on the histogram and then divide that sum by the number of values (samples). Example: There are 5 values: A, B, C, D, E. Mean value is: (A+B+C+D+E) / 5