average

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ActiveRecord calculating multiple averages

I have a scores table with both score and time per user. I want to calculate both averages grouped by user. I can successfully calculate one of them but not sure how to do both at once.[详细]

2023-02-14 13:04 分类：问答
how to calculate the percentage of match / absolute value

hard to explain...let me try: I built a script that compare two users\' interests (hobbies) let\'s assume userA have 44 hobbies, and 13 in common with userB (who has 19 hobbies)[详细]

2023-02-14 12:11 分类：问答
AVG and ISNULL in mysql

I need to achieve some thing like this SELECT ISNULL(AVG(rating),0) FROM videorating vr WHERE vr.VideoId=11229;[详细]

2023-02-14 08:14 分类：问答
Need help fnding the average of a set of numbers in python

in my data file I have 60,66,88,90,44,90,80,77 all the numbers are in one line this is my code which does not give me the average of my numbers[详细]

2023-02-13 16:03 分类：问答
PHP session cookies blocked by end user security software

I have an issue with PHP session cookies which is affecting only users of Internet Explorer who are using security software including McAffee, AVG and Norton. Some (but appare开发者_Python百科ntly not[详细]

2023-02-13 04:15 分类：问答
MapReduce - how do I calculate relative values (average, top k and so)?

I\'m looking for a way to calculate \"global\" or \"relative\" values during a MapReduce process - an average, sum, top etc. Say I have a list of workers, with their IDs associated with their salaries[详细]

2023-02-11 21:20 分类：问答
ASP.Net get columns with values, add them and then divide

I\'ve got some code which is working as it should but it just seems like a bit of a round about way in doing it and wondered if anyone had any ideas of how to tidy it up[详细]

2023-02-10 14:16 分类：问答
total value of all radiobuttonlist values

I have 20 radiobuttonlists on a page. Each has 4 options with values 1, 2, 3 and 4. What I need to do is on submitting the form, get the total value of all the radiobuttonlists (eg 3+1+2+3+4...) divi[详细]

2023-02-10 03:50 分类：问答
SQL 2005 Reporting Services - Wrong Average Values

I have a report which basically shows time info. There are three levels or groups: Route Fleet Vehicle 开发者_如何学Go[详细]

2023-02-09 20:58 分类：问答
MATLAB: How to read first two columns of a .txt file. Then average the columns respectively. Repeat this for many sequentially-named files

I have 163 text files. I need to take just the first two columns and average them, respectively. And then I need to repeat this for all files.[详细]

2023-02-08 10:25 分类：问答