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

Develop the 2 * 2 matrix by inserting neighboring elements

I want to write a function that converts the matrix x=[a b; c d] into another matrix: y = [ a (a+b)/2 b ; (a+c)/2 (a+b+c+d)/4 (b+d)/2 ; c (c+d)/2 d ] You can use 2D convolution to compute the sum of neighboring elements (the numerator of each element

Calculate the average of the results of the account

I am trying to find the average number of products/store. I want something like this: Store Avg.Products Store 1 100 Store 2 20 Store table: StoreId Products table: Productid, Pname, StoreId If there are 100 total products and by using count i got 9

mysql - Average from 2 fields, ignoring the zero

I am looking for an elegant query to get an average ignoring zero values. Example: I have 2 values, and an expected result: SELECT X(10,20) AS result -- expected result: 15 SELECT X(0,20) AS result -- expected result: 20 SELECT X(10,0) AS result -- e

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

Calculate the average of two tables

I am new to SQL and I just can't figure out how to calculate the average of a certain value in two tables. I have one table that is having all the information of the lakes in the world and i have another tables including all the information of the se

ImageMagick - Find the average color of a triangle in an image

This is a more advanced version of this question. From this image, how would I get the average color value of the pixels under the triangle from its co-ordinates with ImageMagick/GraphicsMagick/a different command-line tool? Preferably the solution s

AVG date time of the SQL query in the same table column

I'm trying to make a query that returns the difference of days to get the average of days in a period of time. This is the situation I need to get the max date from the status 2 and the max date from the status 3 from a request and get how much time

Understand the small basic loop

I have this code that Ive spent too much time on and I cant figure. Its supposed to get the averages of the numbers and then output the answer.I input the name and then when I type in the numbers it only takes 1 and after that i cannot continue. Im a

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

AVERAGEIF in Excel with irregular range

I know is a pretty basic question, but surprisingly, I can't seem to find a solution for it. I'm looking to averageif every 10th cell that doesn't contain a 0 value, but for some reason the syntax doesn't work. I can't just take a range from between

In Python, how to get the sum and average in a loop

I've managed to implement a loop but keep getting a syntax error when I try the sum function. I need the numbers input by the user to be totalled and the average given as well. This has to be outputted to the user. Could you please guide me on where

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

Calculate the average value for 5 minutes in Perl

I have a data set with three different fields (Date, Time, Value)as follows: 2014-01-24 23:32:01.874 45 2014-01-24 23:32:02.198 71 2014-01-24 23:32:02.302 94 2014-01-24 23:32:02.439 48 2014-01-24 23:32:02.574 82 2014-01-24 23:32:02.724 51 2014-01-24

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

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*; public class PrefEx2{ public static void main(String args[])throws IOException{ int quiz, ave, sum=0; BufferedReader inpt = ne

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 |

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

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

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