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### When is NHST appropriate in business?

Null hypothesis significance testing seems to be widely used in business. The most obvious example is A/B Testing, where a business will perform a test comparing two variants of some aspect of their ...
8 views

### Calculate CLV / TLV for contractual Business

I am desperately trying to apply a CLV/TLV (Customer Lifetime Value) algorithm to my dataset in R. Unfortunately, the more I read about it, the less confident I get if all makes sense. =) Do you have ...
5 views

### Markov Switching CHP test

In Hamilton's paper "What is real about business cycles?" (2005) I have three questions: 1) How do we calculate C(p; theta) on page 451 if we do not know "nuisance" parameter values of p? 2) What was ...
143 views

### Measuring impact of advertising on retail sales

I have a dataset of retail products which contains weekly sales for 12 different items in a single category. For each item, I have three dummy variables representing different types of advertising (...
21 views

### Calculating growth rate from a baseline of exactly zero

Say we have a series of month-on-month figures like the following, and we want to get the growth rate between the two periods: ...
20 views

### Drawing a causal conclusion about a change in production code

We had a change in our production code which we did not perform A/B test for. A few days after the product is changed, we have been seeing a significant drop in our quality metrics. Is there any way ...
23 views

### Suitable and efficient comparison metric/index for price data

I have price data for similar products in different stores like below ...
27 views

### Propensity modeling

I am trying to model for understanding the probability of a customer buying a product based on his/her recent interactions with the system. For a customer who has made a purchase it is very easy to ...
403 views

### Calculate mean from cumulative percentage table

Is it possible to calculate mean from cumulative percentage table below? Scenario: Bob is a manager. He is trying to estimate the sales for the next year, and from his experience, he knows the sales ...
39 views

### Survival Analysis on conversion rates

I'm trying to implement survival analysis on conversion rates for a free trial product we provide. In general, I understand the applications on survival analysis along with dealing with right censored ...
49 views

### Regression with negative values, inverse regression, cost stickiness

I'm doing an analysis of cost stickiness with change in cost and change in revenue. Cost stickiness means that the percentage cost will decrease when revenue decreases is lower than the percentage ...
172 views

### What's the probability a rabbit will return to a (certain) forest?

Let's assume we have a forest. And there is a breed of rabbits that is visiting that forest all the time. It is possible to distinguish every individual rabbit. There are devices in that forest ...
8 views

### Benchmarking Analysis (statistical approach)

Im looking for sources in order to perform some kind of statistical analysis applied to Benchmarking, i.e., "market analysis" where I'm measuring the performance of a company's products, services, or ...
15 views

### Estimate with 90% confidence, the mean size

The operations manager of a vehicle manufacturing plant in London wants to estimate the average size of an order received. An order is measured by the number of vehicles shipped. A random sample of ...
95 views

### How to forecast individual customer's spend (for millions of customers)?

Which forecasting model fits better to forecast the customers spend in the next upcoming visit? We have millions of customers, so ARIMA or any other time series modeling for each of the customers is ...
41 views

### Difference between forecasting model, forecasting method and forecasting function

I am new to the field of Business Analytics. Can anyone distinguish between forecasting model, forecasting method and forecasting function? According to the book forecasting function is is an equation ...
2k views

### How to write log-likelihood for beta-geometric with optim() in R?

I am trying to estimate the parameters for a shifted beta-geometric distribution to model user churn, as shown in this paper. The log-likelihood function is described there and solved via Excel, and I ...
125 views

### Building business intelligence tool — where to start?

I'm currently a web developer with a backgound mainly in server side technologies however I've always had an interest in probability so recently I've been exploring building a dummy betting platform ...
15 views

### Architecture to build model off of partners data while protecting each partners intellectual property

Are there any architectures that allow two partners to build a model while protecting each of their respective intellectual property (IP)? For example: Company A builds machine learning models ...
31 views

### Which statistical figures should be used to describe my data set [closed]

I apologize if this question has been asked before. I am looking for the best way to describe my data set. A little background - I am a algorithmic programmer with a physics/mathematics background. ...
61 views

I have been tasked with finding the return on investment of a vaccine. The vaccine is used by farmers for their cows and the number of cows kept varies drastically between farmers (from $1$ to $1,000'... 1answer 58 views ### What is the resulting increase in Sales ($ and %) from a treatment?

I have 43 weeks of data (here) that show the resulting weekly sales of a group of test stores which received a treatment and sales of other "control" stores that did not. There were 36 test stores and ...
56 views

### Correct statistics technique for prob below

I am kind-of stuck with a small problem here. I can't find a proper statistics based technique which will solve my problem! Problem: I have a dependent variable (Categorical 4 Levels), and 6 ...
1k views

### Combining metrics for score card

We are building a score card system to measure the performance of various groups in the organization. The scores are generated by true / false metrics on individual transactions that each group ...
39 views

### Choosing a significance test for employee performance

I'm analyzing employee performance at a call-center. I'd like indicate whether a particular employee's conversion (success) rate is significantly different from the average/expected conversion rate. ...
60 views

### Is there any “Intro to Statistics” for business and mangement use?

I am looking for an "Introduction to Statistics" to apply to business and management. Can someone recommend a source they have used (maybe in their MBA or similar studies) that is available online (...
151 views

### Aggregation system for percentage Key Performance Indicators (KPIs)

I need some suggestions for an issue regarding our business intelligence (BI) system, percentage Key Performance Indicators (KPIs) and average values. I am using a BI system for our organization, ...
591 views

### Practical Examples of What Econometrics Can Do for a Business? [closed]

Hello, all. So, as a beginning MA student in Economics, I had to take a basic Econometrics course (which was absolutely fascinating and I really loved it), and it seemed like a genuinely practical ...
23 views

### Is there a standard set of reports that can be applied to any dataset?

I work for a small recycling firm and we have built and maintain a stock management system. I've been asked to implement some reports over our dataset but I have no background in BI or statistics. I'm ...
43 views

### Can CAPM be applied in this non-financial context?

I want to get a "score" which measures the efficiency of truck planners at a site which despatches boxes of identical size to multiple destinations. This is measured by how full each truck is, on ...
490 views

### Accuracy of a probability estimate

How can you classify the accuracy of a probability? Say I do a study of people that like bananas in 2 different regions. Region 1: 8 out of 10 people tested like bananas. Region 2: 500 out of 1000 ...
61 views

### Calculating Revenue per customer for a series of emails over time, which have a normal decay rate

I am analyzing data for an email marketing company. We have x amount of subscribers that come in at some point in time. We promote zero or more emails to these individuals daily, for several ...
176 views

### What challenges can data science help with in small businesses

Data science can solve/help with many challenges. But it usually looked upon as something for multi-million dollar corporations. I'm looking for examples of challenges data science helped with in ...
30 views

### How to average days until completion when some items haven't completed the cycle?

I am attempting to calculate the average number of days it takes for an order to go through our process - from receipt of order to delivery. When calculating the average days, how should I handle ...
802 views

### Odds vs probability in logistic regression

I am going through Trevor Hastie's Classification Techniques. Its says Odds are traditionally used instead of probabilities in horse-racing. I still don't understand how they relate more ...
183 views

### Should I use Bayes' formula to generate simple data about business competition and the market place?

I run a small business, and I'm keen on understanding my market a little more. Market surveying and similar tools are not available to me, mainly due to time and budget. I don't require rock-solid ...
726 views

### Good practice for statistical analysis in a business environment

(While I realise this isn't strictly about statistics, it is about the dissemination of statistics in a business environment so I have assumed it is still within the topic range of CV) A brief bit of ...
252 views

### ROI Social Media

I'm trying to estimate the ROI of a social media campaign but the main issue I'm falling into is linking social media spend to actual company sales. More followers/tweets/likes/fans etc may just mean ...
233 views

### Difficulty identifying diminishing returns from additional SKUs

As a work assignment, I've been asked to determine the optimal SKU count for a product group. I've decided to tackle this Q using a simple linear regression with sales as my dependent variable and the ...
3k views

### What is the difference between Visualization and BI Visualization?

I am currently doing visualization on my project and I need to know whether the visualization I have done is BI visualization or not. So is there any difference between Visualization and BI ...
250 views

### How can you summarize growth in the “production” rate per person?

I have been reading the book, Good to Great by Jim Collins. It says that you should focus on information that "cannot be ignored," and that you should focus on the right "denominator." I thought it ...
139 views

### MS business intelligence development studio CART analysis

I'm doing some clinical database research and in an effort to lessen the burden on our statistical staff, I started to look for different software solutions to get the analyses I need, and that's ...
3k views

### Standard deviation of revenue where numbers are only positive

Is there a way for standard deviation to ignore negative numbers? In other words, how can you make it so that 2 or 3 deviations do not extend into negative territory? When looking at a set of only ...
168 views

### Checking what attributes of a population made objects more likely to do certain action

I'm pretty lost at how to approach this, and particularly with regards to the terminology; so please feel free to point to resources, fix my question name, etc. Thanks. I used R back in college, I've ...
123 views

### Layperson's guide to valid polling via Internet?

Sites such as Survey Monkey allow a layperson to easily create and administer a questionnaire. However, the only thing I know about polling is that you can't just create a questionnaire, let anyone ...
525 views

### Doing data analysis for property managers…any tips? [closed]

So I have data elements such as rent price, late payments, unit type and location. I haven't done statistical analysis since my university time where I majored in industrial engineering 2 years ago ...
172 views

### Algorithm to evaluate whether you should buy now or wait [closed]

I'm currently in search of an algorithm that can determine whether or not it's time to buy something (an item, a stock, a service, etc.) given an history of prices (30, 50, 100, ...). My idea is ...