(you have 30 seconds pause video if you need to)
take 1000 and add 40 to it.
now add another 1000. now add 30. add another 1000.now add 20 now add another 1000. now add 10.
what is the total?

So,

This is a simple addition problem.
1000 + 40 + 1000 + 30 + 1000 + 20 + 1000 + 10
1040 + 1000 + 30 + 1000 + 20 + 1000 + 10
2040 + 30 + 1000 + 20 + 1000 + 10
2070 + 1000 + 20 + 1000 + 10
3070 + 20 + 1000 + 10
3090 + 1000 + 10
4090 + 10
4100

The sum is 4100.

What the point of asking this is, remains a mystery (Revelation 17:5).

The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.