Questions tagged [excel]
The excel tag has no usage guidance.
0
votes
1answer
23 views
Changing Timestamp format for Date-Time in Excel/Pandas/Python?
I have a excel data with time stamp format like this "2019-06-10T14:05:00+05:30"
[YYYY-MM-DDTHH:MM:SS], I want it to be converted into "2019-06-10 14:05" [YYYY-MM-DD HH:MM],
Is it possible to convert ...
2
votes
5answers
61 views
30 Years Of Excel Test Data
I am a CS intern at an industrial company that has 30 years of excel files that need to be analyzed. Looking at the data, only a fraction of the files need to be looked at and used. After those files ...
1
vote
0answers
29 views
Cleaning Excel Data in Merged Cells
I need to use an Excel file that have many merged cells with no specific order.
I guess that the file creator thought that it would be more readable to merge the cells that have the same value.
...
1
vote
1answer
26 views
Different t-test results from R and LibreCalc
while I was trying to apply one-tailed t-test to two vector of data on R, I just wanted to apply same thing on librecalc also and then I noticed that p-values are different. Here is a summary what I ...
0
votes
4answers
68 views
How should we manage large database
We currently manage a large volume of economic data in Excel in my organisation. All of the data is downloaded from different online databases into Excel spreadsheets (one for each data frequency ...
0
votes
0answers
15 views
1
vote
1answer
47 views
Importing Excel format data into R/R Studio and using glmnet package?
I have no problem importing Excel formatted data into R/R Studio and use all other R packages that I use. But, when I want to use the glmnet package to develop a regularization model, I invariably ...
0
votes
0answers
473 views
Pandas Excel writer update existing excel file
How do I update an excel file and not overwrite it?
...
3
votes
3answers
1k views
How to Write Multiple Data Frames in an Excel Sheet
I have multiple data frames with same column names. I want to write them together to an excel sheet stacked vertically on top of each other. And between each, there will be a text occupying a row. ...
0
votes
1answer
76 views
Categorical data into numeric in excel
I have a large dataset and I would like to convert these categorical data into numeric in binary form to perform k means clustering in R. However, I get an error in value. This is the formula that I ...
3
votes
2answers
57 views
Expectations of the skill set of a Data Scientist [closed]
Although there are more powerful tools than Excel which a data scientist should know how to use, would it be expected that someone indicating they are a Data Scientist know how to use Excel?
1
vote
0answers
16 views
Excel All Possible Combinations for MacOS
Is there a formula in Excel to calculate all possible combinations for multiple lists for MacOS. For instance, I am trying to draft a fantasy team and I have the following combinations:
...
3
votes
3answers
61 views
How to predict whether or not a customer will renew
I have a dataset of customer contracts that specify a start date and if applicable an end date. Each month a customer is up for renewal. Below is an example of how the data is organized in excel:
<...
1
vote
1answer
196 views
Calculate weighted mean for two columns and hundreds of rows?
I'm trying to teach myself basics of R and I couldn't find the answer:
Say, I have a csv file and I want to calculate weighted mean for each subject such that I have a mean mu = 0.015*1030+0.16*26930+...
1
vote
1answer
34 views
Problem when exporting scored labels to excel
I have done a regression using Azure ML Studio and it ok. The r squared is 95% on the test sample.
When predicting, the results look ok when visualizing the data.
The results appear as expected, with ...
-1
votes
1answer
79 views
How to add values to new row to a csv in python
So what I'm trying to do is iterate over a (grayscale?) image and look at each pixel and write that pixel's grayscale value to the second row(the first row is the pixel number). Code isn't doing ...
7
votes
1answer
249 views
How far can one go with excel? [closed]
in my business we handle all analytics through Excel. This includes mostly scheduling, production planning and accounting operations. We currently are looking into adding a bit of predictive modelling ...
1
vote
1answer
50 views
How can discard “peaks” values from a chart?
I have this chart
where you can see that some points are far away from the "trend" of the curve. The chart represents $5,000$ values where each value corresponds to a specific hour of a day, month ...
0
votes
2answers
11k views
Search and Replace in specific column of csv with python
I created a program that search and replaces over an entire csv file but I need to make so it is column specific. Is there a way to only search via a column. Here is my code, I am pretty new to python ...
2
votes
0answers
38 views
Orange “Scatter plot” widget to excel, best way
So I have chosen "Orange" for my research as a main app for clustering ant it's analysis.
Excel 2016 is primary app used for dashboard (via "pivot table").
Problem - how to add graphs from "scatter ...
0
votes
1answer
144 views
How can I transpose a high dimensional dataset?
I have a (.csv) file with more than 35,000 rows and 100 columns, where the rows represent the attributes and columns represent the instances. In Excel the maximum number of columns is 16,384. ...
1
vote
1answer
44 views
How to manipulate this column of less than/greater than?
I have a dataset in which one column is as given in the picture.
What will be the best way to handle such a column?
0
votes
1answer
1k views
Compound Annual Growth Rate Function in R Statistics
I need to calculate the compound annual growth rate for two periods of time: 2014 & 2009. I'm currently working with Excel, I have two columns with data for each year (One column with only data of ...
1
vote
2answers
49 views
Find value and return row in excel spreadsheet with over 1 mil rows [closed]
I have an excel spreadsheet that has over 1 million rows and about 120 columns. I frequently need to find a value or a part of a value (value is name or number) and return the row where the value is ...
0
votes
1answer
231 views
No result for scored labels in Azure ML Web Service
I am trying to predict scored labels using regression. But when I am about to get the result from Azure ML Web Service in Excel 2016, there is no result appeared in the scored label column. How should ...
1
vote
2answers
77 views
Discovering cross category sales using transactions history (Clustering?)
I have a set of sales transaction data containing more than 1 item purchased. Every item sold has a category. I would like figure out which categories are most commonly ordered together.
The data is ...
2
votes
1answer
33 views
MS Access issue [closed]
I have a database that I send to an excel sheet that auto populates some field in a report with calculations that I need. There are several users and the excel sheet cannot be open at multiple times ...
1
vote
1answer
70 views
Excel file merge with different headers but same data
I need to merge data from 1000s of excel files provided by different operations managers on productivity and other reports. The excel files have similarity of data but the headers are all custom since ...
3
votes
1answer
205 views
logistic regression coefs to excel formulation
I have done a Logistic regression in r with 3 variables involving 1 interation:
lm(predicthead~vol+weekday*head, mydata)
weekday is a factor - 7 days of the week....
12
votes
6answers
1k views
Is Excel sufficient for data science?
I'm in the process of preparing to teach
an introductory course on data science using the R programming language.
My audience is undergraduate students majoring in business subjects.
A typical ...
-1
votes
1answer
49 views
Excel formula question
I have a rather complex formula that I need to build. Basically I get a list of data every month, and there is a metric for the first operator of the day. The first column comes in the date and time ...
4
votes
1answer
100 views
How to generate bulk graphics using R
I have a dataset of Key Performance Indicator (KPI) and for each KPI I have a current level of achivement and 2 targets : Target1 and Target2.
How can I automatically generate one graphic for each ...
1
vote
2answers
777 views
What are recommended ways\tools for processing large data from Excel Files?
A Very Happy New Year! I'm currently working on an analytics project with large volumes of data stored in excel files (about 50GB in 1000 files). The files use a custom formatting to store date-time ...
1
vote
1answer
100 views
Best practice for computing week-over-week change in MAU metric
When we calculate week over week change for a metric like "Monthly active users", we often refer to a calculation of SUM(This week) - SUM(Last week)/SUM(Last week), which means we will run total of ...
1
vote
0answers
56 views
Creating Clusters in Excel office
I am trying to make group categories based on the similarity in attributes. For example;
Car1: blue, big tires, slow, comfortable
Car2: green, small tires, fast, comfortable
Car3: blue, big tires, ...
2
votes
1answer
98 views
Working with text files in Excel
I have an excel file containing a long text in column A. I am looking for the words starting by "popul" such as popular and populate . I can find these cells by the formula:
...
36
votes
11answers
21k views
Do data scientists use Excel?
I would consider myself a journeyman data scientist. Like most (I think), I made my first charts and did my first aggregations in high school and college, using Excel. As I went through college, ...
