In a bar chart, as shown in the figure above, price movements are shown using a vertical line with two small horizontal lines on the sides to indicate the starting and closing prices over a period of time. The bottom of the vertical line at the bottom and top shows the maximum and minimum prices for the time period shown by that bar. The starting price of the transaction is indicated by a horizontal line on the left side of the vertical line, and the final price is indicated by a horizontal line on the right side of the same initial vertical line.
Long vertical bars indicate that there has been a significant difference between the maximum and minimum price of that period. This means that the volatility in this range has been high, and conversely, when these vertical bars are short, it indicates the low volatility of the price in this range.