What is the correct way of calculating the "average" price based on the "Open,High,Low,Close" daily trade fields? Open,High,Low,Close

I have these fields, representing the &quot;opening&quot; amount, the highest for the day, the lowest for the day, and what it closed at.
I'm trying to determine the &quot;average&quot; price for the day.
I currently do this:
(Open + High + Low + Close) / 4

Is this correct? I get slightly different numbers if I do:
(High + Low) / 2

Which one is correct? Or, most common/used?
You cannot obtain that information with the data provided.
You would need periodic samples throughout the day.