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marshmadness98
Level II

Going from Quarterly to Yearly averages

Hi! I have average water level elevation by quarter, but I am trying to get yearly averages. Is there a conditional statement or formula I could use to do this, even if every year doesn't have an even four quarters?

1 REPLY 1
txnelson
Super User

Re: Going from Quarterly to Yearly averages

If your quarterly water level elevation data is in a single column, then one can use Tables=> Summary to calculate the mean of the quarterly averages.
If your data are laid out with each quarter in a separate column, then you will need to create a new column that has the formula
mean(qt1,qt2,qt3,qt4),
where qt1-qt4 need to be replaced with the actual names of the columns have have the average data.
Jim