A scale on the graph shows the way the numbers or pictures are used in data. Let us now move on to a bar graph. We use the same data of “Favorite Musical Instrument” to plot a Bar graph
The only number that can be applied to the expression without changing the sum is 0, for example 5 + 10 = 15, adding 2 0's will be 0 + 5 + 10 + 0 = 15 :D