## Python Dictionary - find the average value of other values

I have the following list count = 3.5, price = 2500 count = 3, price = 400 count = 2, price = 3000 count = 3.5, price = 750 count = 2, price = 500 I want to find the average price for all where the count is the same. For example: count = 2, price = 3

## How to take the average value taken twice a minute from MySQL

Hello my mysql table looks like this: select distinct(TimeStamp) , TP_bmp183 as "t:emperature_;_p:reassure" from gadbdfm where TimeStamp BETWEEN '2016-12-10 08:10%' AND '2016-12-10 08:15%' ; +----------------------------+------------------------

## SQL - calculate the average exchange rate for given periods and use it in some

first time poster here. i have two tables 1)transactions (T1) 2) exchange rates(T2). T1 holds daily transaction in several currencies, T2 holds daily exchange rates for all currencies. firstly, i want to calculate the average rate for every currency

## c # mark average calculation problem

Console.Write ("How many students do you have?: "); student = Convert.ToInt32 (Console.ReadLine ()); int[] numberOfStudents = new int[student]; for (int i = 1; i <= numberOfStudents.Length; i++) { Console.Write (\$"Enter student {i}'s cur

## Best strategy for averaging with high accuracy

I was comparing two algorithms computing the average of random numbers. First algorithm sums all numbers and divides by the items count in the end Second algorithm computes the average on every iteration and reuses the result when new data is receive

## Average of the different iterations of a variable in a for loop

I can't seem to figure this out - I want to get the average of all the inputs at the end of this program but I don't know how to save the inputs with each iteration of the loop. Any help would be much appreciated, thanks! students = int(input("How ma

## MySQL AVG () returns 0 if NULL

I have 3 tables, shown below: mysql> select * from Raccoon; +----+------------------+----------------------------------------------------------------------------------------------------+ | id | name | image_url | +----+------------------+------------

## how could i find the average using a python 'while' loop using this code?

how would i find the average when using a 'while' loop in python using this code? n1 = int (input("Enter a value up 100, enter 0 when finished")) high =n1 while n1!=0: if n1 > high: high=n1 n1 = int(input("Enter another number")) th

## How to write a function that takes the average of a list of numbers

I want to avoid importing different modules as that is mostly what I have found while looking online. I am stuck with this bit of code and I don't really know how to fix it or improve on it. Here's what I've got so far. def avg(lst): '''lst is a list

## Average calculation for single dates separately

I am trying to find out an average number of times a user enters the office. I have a similar scenerio to the one below for unique users that come to office. My database has data for everytime a user comes to an office. Please note: Everyone has diff

## R - Average columns by information in row X

I have a data.frame where the first 13 rows contain site/observation information. Each column represents 1 individual, however most individuals have an A and B observation (although some only have A while a few have an A, B, and C observation). I'd l

## I do not know why it does not work

This is a program i'm stuck on for school. Can't figure out why it won't give me a average and a greatest. The program runs 50 times like i want it to but does not add a value to moves and total. import java.util.*; public class RandomWalk { public s

## Custom function with table entry: Error: | Can not launch float to float * | without any casting

I wanted to make a program which obtains temperature of each day of 2 months and prints the average for each day The error code is at the line where the day_avg() is called. (Cannot Cast float to float*) #include <stdio.h> void day_avg(float month[]

## Average time for the datetime list

Looking for fastest solution of time averaging problem. I've got a list of datetime objects. Need to find average value of time (excluding year, month, day). Here is what I got so far: import datetime as dtm def avg_time(times): avg = 0 for elem in t

## Get averages from monthly data

I have a file with about 2000 lines of Data on sunspots. I need to take each month and find the average of it and write it to a new file. How do I group the months so I can get a average? I've read a few threads suggesting using panda, but since we h

## Percentage of closing MATH in MYSQL

I want to do math in a query, and was wondering if its better to do it in PHP or MYSQL. Also, if I choose MYSQL can anyone help me with the query. So far I have SELECT COUNT(*) as total, booker, appdate, SUM(CASE WHEN status='DNS' THEN 1 ELSE 0 END)

## Java quiz in loop

So I'm quite in trouble in debugging this code and would like to ask for your help.. So this is the code: import java.io.*; public class PrefEx2{ public static void main(String args[])throws IOException{ int quiz, ave, sum=0; BufferedReader inpt = ne

## Average of the last N records per group

My current application calculates a point average based on all records for each user: SELECT `user_id`, AVG(`points`) AS pts FROM `players` WHERE `points` != 0 GROUP BY `user_id` The business requirement has changed and I need to calculate the averag

## SQL group using the first N elements in each group

This question already has an answer here: Top N per Group Sql problem in mysql 1 answer Suppose I have the next table: +------------+---------+ | MovieId | rating | +------------+---------+ | 1 | 4 | | 1 | 3 | | 1 | 2 | | 1 | 4 | | 1 | 5 | | 2 | 3 |

## Average of DataTable columns - Invalid specified distribution

I am attempting to average the values in every column after the fifth column in a datatable using this strategy List<double> mylist = new List<double>(); for (int col = 5; col < GridData.Columns.Count; col++) { double avg = GridData.AsEnume

## Total time taken and average time taken by all subjects

I am working on a project in which I need to measure Total Time taken by program and average time taken by program. And that program is a Multithreaded program. In that program, each thread is working in a particular range. Input parameters is Number

## Average calculation with SelectedIndices

My program reads coordinates(double x,douule y) into ListBox and need to calculate the average of them after choosing them with SelectedIndices and MultiExtended. The problem is how can I refresh my code with each Multiselection. As you can see I set

## Average of all n elements of a vector in matlab

I would like to average every 3 values of an vector in Matlab, and then assign the average to the elements that produced it. Examples: x=[1:12]; y=%The averaging operation; After the operation, y= [2 2 2 5 5 5 8 8 8 11 11 11] Therefore the produced v

## Using AVG () in Oracle SQL

I have a table named Student as followed: CREATE TABLE "STUDENT" ( "ID" NUMBER(*,0), "NAME" VARCHAR2(20), "AGE" NUMBER(*,0), "CITY" VARCHAR2(20), PRIMARY KEY ("ID") ENABLE ) I am trying to get al

## Effective way to calculate the average difference of array elements from the average value of the array

Is there a way to calculate the average distance of array elements from array average value, by only "visiting" each array element once? (I search for an algorithm) Example: Array : [ 1 , 5 , 4 , 9 , 6 ] Average : ( 1 + 5 + 4 + 9 + 6 ) / 5 = 5 D

## Moving average to calculate the intensity of the rain

I have some real rainfall data recorded as the date and time, and the accumulated number of tips on a tipping bucket rain-gauge. The tipping bucket represents 0.5mm of rainfall. I want to cycle through the file and determine the variation in intensit

## How to correctly calculate a running average of large sets of numbers with a 32-bit floating point?

I'm writing a path tracer and have to collect an average over a large number of samples per pixel. I get significant visual differences between a 1024-samples run and a 16384-samples run; the 16384-samples run is darker. I conjecture that this is bec

## Get a weighted average date value?

If I have 50% weight on 6/3/2011 and 50% weight on 6/1/2011, the weighted average will be 6/2/2011. Now, I can't seem to figure out how I can do this with uneven weights, since it's not like you can multiply a DateTime by a double, and sum up the res

## Calculating the average of the columns of a table by ignoring certain columns

I've the following code which successfully makes an average for all the columns from a table. What I need to do though is ignore certain columns in this equation. Dim totalNumber as Double = 0 Dim count as Integer = 0 For x = 0 To xyz123.Tables(0).Co

## Effective way to calculate the average value on disjoint sub-ranges of the STL card

I'm converting an algorithm from C# to C++. A small part of the algorithm is to calculate average values for certain areas in a dictionary. The data in the dictionary is stored in the following way: Index Value 1 10 3 28 290 78 1110 90 I need to calc