The bar chart tells a bit more. Many times it will show the opening, high, low and
close of the day on the chart. This shows much more because many times it’s important
to know if a stock opened high but closed low (this is generally considered bad).
The opposite would also be true. A stock opening lower, yet closing higher is generally
a good sign. The bar chart will show this much easier than looking at a lot of quotes
over time. The chart is the graphical representation of the quotes and allows you
to take in so much more data in a short amount of time and realize whether that
data is going up overall or going down overall.