Top "Average" questions

Average of latest N records per group

My current application calculates a point average based on all records for each user: SELECT `user_id`, AVG(`points`) AS …

mysql average greatest-n-per-group limit-per-group

General - Is there a way to calculate an average based off of an existing average and given new parameters for the resulting average?

Lets say, we're calculating averages of test scores: Starting Test Scores: 75, 80, 92, 64, 83, 99, 79 Average = 572 / 7 = 81.714... Now given 81.714, is there a way to add …

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Getting the average of a certain hour on weekdays over several years in a pandas dataframe

I have an hourly dataframe in the following format over several years: Date/Time Value 01.03.2010 00:00:00 60 01.03.2010 01:00:00 50 01.03.2010 02:00:00 52 01.03.2010 03:00:00 49 . . . 31.12.2013 23:00:00 77 I would like to average …

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Average extension method in Linq for default value

Anyone know how I can set a default value for an average? I have a line like this... dbPlugins = (from …

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How to output the decimal in average?

I have a problem in showing the decimals on the average. It keeps showing .00 or .1. I tried to put it …

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getting the average, p95 and p99 of a stream of data

I have incoming data and I want to compute the average, 95th and 99th percentile of that data - I …

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Ruby on Rails field average?

Is there an easy way to obtain the average of an attribute in a collection? For instance, each user has …

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Average function without overflow exception

.NET Framework 3.5. I'm trying to calculate the average of some pretty large numbers. For instance: using System; using System.Linq; …

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How can I get xtabs to calculate means instead of sums in R?

I have a data frame where each line represents an individual. That data frame has two variables: age and year. …

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AVERAGEIFS does not work, but AVERAGE(IF( does

We have a large spreadsheet that we use to calculate performance for race car drivers. It has been stable for …

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