Questions tagged [data-analysis]

Data analysis is a process of inspecting, cleansing, transforming, and modeling data with the goal of discovering useful information, informing conclusions, and supporting decision-making.

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7 views

use cases of geocoding maps

Tableau has interactive maps that can be used for custom geocoding. I know companies often divide regions for sales and marketing purposes but could anyone think of any specific use cases or examples ...
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1answer
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How to assess a trend during time?

I wanted to know which analysis method would you suggest for assessing a trend during years. Let us say we have data on antibiotic resistance in a particular bacteria from 2010 until 2021. How can we ...
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4 views

Finding negative drop in time series data

I'm trying to detect the negative peaks in this time-series data. There are two series of data (catch: they fall at the same time). The problem I'm facing is that the peak is relative to the ...
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8 views

What statistical test should I use (SPSS)?

So this is probably asking a bit much but I'm not sure what test I should use: I'm planning on investigating the significance of socioeconomic status when considering the health effects of workplace ...
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Timeseries data analysis

Data is as below, use code to create a larger sample. ...
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13 views

How to match people in preference ranked survey results?

I'm sending out a survey that I want to use to create pairs. For example, each person indicates whether they want to be a mentor, or a mentee. They then stack rank 10 topics that they're interested in ...
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Tableau - Filter Buttons not filtering correctly

I created filter buttons to use as a filter for 6 category's (measures) in Tableau Public (latest version) so when you click on them the values for each display on my "Military Enrollment By ...
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2answers
86 views

Which analytics metrics are useful?

I have a home assignment from an interview. The question is : A session is defined as a period of activity in the app. If there is a period longer than 5 minutes when the user does not do anything ...
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1answer
26 views

Knit with R markdown [closed]

I have tried running some code on RStudio Desktop, within the Chunk the codes runs smoothly, but when knitting to view as html, I get the message that something is wrong with a line of code. What can ...
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Methods to extract / merge signal from three noisy time series (of same event)

I have three time series of same length, all containing magnitude measurements of the same event "A". But each time series is using a different method of measurement. My goal is to merge the ...
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For a student who is a beginner in quantitative research and statistics, which is the better statistical tool to start: R or IBM SPSS? Why? [closed]

Currently, I am writing my research design. However, I am still indecisive on what statistical tool should I use for the data analysis. I tried looking up on the internet and there are disparate ...
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39 views

How to represent/aggregate data belonging to same group, and feed to model for training?

I have a problem in which there are couple of records that belong to the same group, like multiple observations. For example this data set has three groups, For each group, I have three observations....
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Cost Efficient Machine Learning Development Using Cloud GPUs

Let's say I have a Juypter Notebook I am working on where I am analyzing, visualizing, testing, etc. various Machine Learning Models with different hyperparameters on some arbitrary data set or I am ...
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Online Generating Dendrograms with imported CSV file

Is there any website out there that performs hierarchical clustering on an imported file like CSV to generate dendrograms or similarity matrix? Free or paid does not matter. So far I found heatmapper....
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15 views

How to integrate Zoho analytics with Jupyter notebook? [closed]

I am trying to connect Zoho Analytics and Python for importing data from Zoho Analytics. I have already installed !pip install zoho-analytics-connector. What should ...
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1answer
26 views

How to find median/average values between data frames with slightly different columns?

I am trying to combat run-to-run variance of the data I collect by combining the data from different runs and finding the mean/average. The problem is that in each run there is a chance that some of ...
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Weighted Voting: Accuracy and Coverage in Class Weight

I have a data set in which the data is coming from various sources. Approx 3k records were verified manually and respective source is tagged if the data comes from that source and is valid/correct. I ...
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What is the best statistical test to compare the competitiveness of 10 football/soccer leagues within a time range?

I was wondering what stat test is the best to find out which football/soccer league is the most competitive. The leagues that I would choose for this analysis are either based on the countries that ...
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13 views

generate synthetic data for multivariate data points

I have some data like.. ...
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ML techniques for subscription data

What are the ML methods one should use for subscription data comprising of visits, monthly active user, user interaction, product usage, location, source. predicting cost for our services.
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10 views

Video games with built-in logging

I'd like to get some practice with reinforcement learning and data analysis in the domain of video games. I'm looking for a game that logs user behaviours (e.g. UI click events, player position, item ...
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39 views

If I have two variables with strong correlation, should I delete one and leave the other in my data

I have a large dataset, where I should make a binary prediction. The fact is that, after analyzing the data, I found that some variables are positively correlated to each other. So, I was wondering ...
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24 views

Dividing a data set into segments with consistent inner behavior, using segmentation algorithms and metrics for consistency

Context of the problem: I have signal data which was recorded in a software system and which shows the runtime of multiple processes over time. In total there are more than 900 processes each having ...
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Identifying the best group that are most productive

can you please give some idea to solve this problem, Below is my data, I want to identify the best inventory based on the CPM(target value) .. For example: I want to be able to say - Business section, ...
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14 views

Tableau unable to map locations when names are similar

I have created a custom geocoding solution by inserting my own tables in a hyper file. I had a Names column where I had names in different formats for example a) 10.1.7.10 b) 10171.0 When I created my ...
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1answer
33 views

How do I conduct an experiment on the new pricing if it's impossible to conduct an A/B test?

We want to introduce a new price list for the customers of our international SaaS company. Beforehand we want to test this new price list in several countries. A/B test cannot be conducted here ...
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10 views

Predicting flags using machine learning algorithms on a TCP data

I am doing a project on a tcp data where I have to predict the normal and suspicious flags within the data. I've got a different distribution of flags in the column and do not know which ones ...
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1answer
64 views

Preprocessing , EDA , and Feature Engineering

What is the difference between EDA, Feature Engineering, and Preprocessing? The main purpose is to make the raw data suitable for modeling. In EDA, we are cleaning the data and so does the ...
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1answer
26 views

Removing features that correlate with the target label

I know that it is better to remove correlated features, but what if the feature correlates with the target label? So, it gives the most information for prediction? Do I need to remove features that ...
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1answer
56 views

How to do EDA on large datasets

I have a table in Postgres with ~5million records. When I load the dataset using pandas to perform EDA, I run out of memory. ...
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41 views

EDA on multivariate time series data

I'm working with a medical dataset in a "long" format, meaning each row represents a timestamp and I have a column named "test" representing the test, an additional column ...
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25 views

Retail Channel Performance Analysis

I have some real time sales and revenue data for a retailer for each day across customer type, state and channel. Sample data shared below: Sales Date Region State Customer Type Sales Channel 1/1/...
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8 views

Categories for binning weather / meteorological data

For EDA purposes I would like to bin continuous weather variables (temperature, rainfall, etc.) into well defined intervals such as the ones you hear in your daily weather report such as: For ...
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8 views

Approach for analyzing marketing campaign

Consider my users has to do "Action A" at their own pace to be able to continue using our service. Then, we run a campaign to push the user to do "Action A" at a quicker pace by ...
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29 views

Finding correlations between plant features?

I have a list of flowers, and each has a color and a fragrance intensity. Each data row has a color and intensity for one breed of flower, like this: ...
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19 views

What analytics model/classifier should be used to predict price?

I've go dataset with more than 10 features - football skills describing players. There is also price value in each row. I would like to predict price by specifying ...
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217 views

Com posso resolver esse erro: TypeError: a bytes-like object is required, not '_io.BufferedReader'

msg: erro: TypeError: a bytes-like object is required, not '_io.BufferedReader' My code: import pickle with open(b'ModelosParaTrader/ModeloEurUsd.pkcls', 'rb') as modelo: lr = pickle.loads(modelo) lr
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1answer
20 views

Document Clustering for given specific clusters in python

How can we classify text in to given specific number of clusters in python? I'm aware that the number of clusters can be specified using some mechanisms like k-means but I need to classify the given ...
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38 views

Affinity propagation did not converge, this model will not have any cluster centers

When I try to cluster using affinity propagation, the below error occurs and the number of clusters is one. ...
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19 views

How to find correlations among repeated measures and how to analyze them?

I have a dataset of repeated measures and I would like to find any correlation between those measures. Also, after finding the correlation I would like to feed the dataset to an appropriate model and ...
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3answers
91 views

How to handle a large number of categories in one column effectively in machine learning?

In my dataset one column has a large no of categories. For model training or building we need to convert these categories to numeric. There are several methods we can use to convert labels to numeric, ...
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1answer
19 views

If two features are highly correlated to each other and giving same impact on target variable in this case, which feature we need to select?

in my dataset, I am having plenty of features and two features are highly correlated to each other and giving same impact on target variable, in this case which feature we need to select in order to ...
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12 views

Customer segmentation in a contractual setting

I am trying to understand the best way of segmenting a business customers into meaningful groups. This is a 'Customer segmentation' problem. There are many ways to go about this. Categories of ...
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34 views

Detect Bias in YOLO format object detection dataset

I work on YOLO data annotation. I want to know how to detect bias in the data before training in this kind of datasets. What are the metrics and analysis methods needed to use to detect bias in ...
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3answers
68 views

Calculating optimal 'phase shift' when comparing two linear datasets to maximise correlation?

Let's say I have two columns of data, when graphed they look like this: This does not have a particularly wonderful correlation. On the other hand if I shift one graph 10 datapoints relative to the ...
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13 views

Importing data directly into excel sheet, from data accessed through Material Project opensource API's

I had a general doubt. If I want to extract some data, say the information regarding a particular chemical using API of material projects(a site that has open-source info on, say elements) available ...
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10 views

What approach do I used to analyze this F&B sales data?

I work as a data analyst at a theme park (kind of like disney) but we operate only during 4-6 months in an year. I was asked to analyze the F&B sales at the different locations in the park and ...
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61 views

How to plot visualization with Interactive Feature Selection in Bokeh, Python

The task is to automate the Visualization. The CSV file contains large nos of features (column names e:g. 32 nos it may increase in future). The task is to plot Interactive Visualization. All the ...
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11 views

How would I perform a regression of this nature?

I have two dataframes. One is a dataframe containing the injury history of all players before 2013, the rows are the names of each player, and the columns in this dataframe are upper leg, lower leg, ...
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Does anyone know of literature regarding a Neural Net boosted GBM?

For obvious reasons, most GBMs created in the private sector are tree boosted. Occasionally, one might want a linear boosted GBM so that the residual models collapse into a simple linear combination. ...

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