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"I highly recommend Rexer Analytics.  Very few quant people possess the total package: excellent credentials, strong statistical and data mining skills, the initiative to anticipate client needs, compelling and concise communications, strong client management skills, and a results-driven mindset.  They’ve led numerous projects that have helped our company maximize marketing efforts and understand our customers better.  In all, the quality has been superior and their client-service attitudes are tremendous."

– A. Charles Thomas, PhD;  Senior Manager, Advanced Analytics, Hewlett-Packard
A large technology products company hired Rexer Analytics to review and analyze their small business loyalty rewards program. We developed reporting that summarized customer engagement, buying frequency, and financial performance for each customer segment. We also developed customer metrics to quantify member value and member loyalty, and to identify members with declining purchasing. The company uses the metrics to develop outreach programs targeted at high value members with waning activity. The campaigns have proven successful at reactivating members and driving increased purchasing. And the reporting provides senior management with a window on both the overall health of the loyalty rewards program and the engagement level of each customer segment.
"Rexer Analytics has been a great Oracle Advanced Analytics (OAA) partner who has delivered customized OAA data mining consulting and instruction for Oracle customers in North America, Europe and Asia. Rexer Analytics’ deep experience and industry knowledge have been great assets to Oracle, and are key reasons I recommend them to Oracle clients.  I’ve worked with Karl for years now as a board member of our Oracle BI, Warehousing and Analytics (BIWA) Big Data + Analytics User Conferences and oftentimes look to Rexer as a great source of customer, product and competitive feedback."

–Charlie Berger, Senior Director, Product Management, Oracle Advanced Analytics and Data Mining, Oracle Corporation
Rexer Analytics developed a B2B fraud detection solution for Hewlett Packard utilizing expert systems and data mining methodologies.  The solution provides HP auditors with a prioritized lead list and key information that enables auditors to quickly focus their audit on the troublesome areas.  An HP fraud auditor, speaking at an Association of Certified Fraud Examiners seminar, described how the solution saved over $65 Million of B2B fraud losses and drove HP to hire additional auditors to keep up with the flow of high quality fraud leads generated by the new analytic system.

With success came expansion of the analytic engagement.  Rexer Analytics worked with HP to develop similar fraud detection solutions for other products and regions.  The expanded solution includes both B2B and consumer fraud, and supports audit teams on four continents.
"Rexer Analytics is definitely one of the key players in the Data Mining ecosystem.  I was introduced to the world of data science when I attended Karl’s Hands-on Lab at the 2008 Oracle BIWA Summit.  In addition to the software training, Karl spent extra time with me, answering questions and providing implementation advice.  Karl is one of the organizers of the annual BIWA Summit, and it is an outstanding event. Each time I bring my analytic team.  We look forward to talking with Karl and others, sharing our successes, discussing ways to overcome challenges, and learning new things.  Karl’s original Oracle Data Miner training session got us started -- and in the subsequent years our Risk Analytics team has tackled tough business challenges, and been very successful in fighting e-payments fraud.  Rexer Analytics is the go-to team to help create analytic solutions."

– Julia Minkowski;  Risk Analytics Manager, Fiserv; and Co-founder, “Russian Speaking Women in Tech”
Rexer Analytics has deep experience building predictive models, segmenting customers and conducting survey research to support banks, investment firms, and other financial services companies.  Solutions have included:
  • Predictive models that identify customers at risk of attrition
  • Predictive models that identify customers who are likely to increase investments
  • Loan risk models – Predictive models that identify customers’ level of loan default risk
  • Targeting models for direct marketing campaigns (new customer acquisition & customer cross-sell)
  • Multi-year customer satisfaction tracking surveys, competitor surveys, and focused quick-hit surveys for account opening, account close, and other customer behavior triggers
Rexer Analytics created a suite of targeting models for a large regional bank.  The models identified households at risk for attrition and households with with a high opportunity for cross-sell. The bank used our models 1) to customize the scripts used by their call center when responding to inbound calls, 2) to target outbound retention campaigns, and 3) to target outbound cross-sell marketing campaigns. Their model-driven mortgage cross-sell campaign was recognized as one of the institution’s best ever campaigns, with the target group showing a mortgage purchase rate five times higher than comparison groups.


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“Rexer Analytics helped our cancer MIT Macro-epidemiology team manage and analyze large volumes of data. They extracted the data we needed from annual US mortality records (over 2 Million per year), and enabled us to add ten additional years to our disease, gender, age and ethnicity-specific mortality rate analyses. The easy availability of this data on our Mortality Analysis website is extremely valuable globally to researchers investigating disease causation and the efficacy of medical interventions. And it would not have been possible without the work of the Rexer team. Examples of the medical insights..." READ MORE

– William G. Thilly, Sc.D., Professor of Genetics, Toxicology & Biological Engineering, Massachusetts Institute of Technology
Rexer Analytics has provided analytic assistance to medical researchers and delivered a variety of analytic solutions to medical device and health care firms. Examples include:
  • Extraction of cancer mortality data from annual US Center of Disease Control (CDC) datasets
  • Predictive models to assist physicians via automated patient diagnosis
  • Sales forecasting for several medical device firms
  • Survey research to explore physician prescription preferences
  • Predictive models to help optimize patient communication and care
"I found working with the Rexer team on our advanced analytics projects to be a very positive experience on many fronts.  Not only do they possess outstanding analytic skills, but they also are very adept at explaining advanced statistics to a lay audience, as well as understanding our specific business needs.  Both Karl and Heather were highly responsive and patient with our rather demanding schedule.  I highly recommend their work and look forward to working with them again."

– Melissa C. Maravić, PhD, MPH, Director of Analytics and Behavioral Science, Eliza Corporation
A US medical device company engaged Rexer Analytics to improve the company’s sales forecasts for their two main product lines.  The improved forecasts enabled the company to provide more accurate revenue forecasts to investors, and also revealed insights that assisted the sales teams with scheduling and pricing. One surprising insight was that physicians in different specialty areas showed different seasonal patterns of product usage.
“Rexer Analytics served our firm well in building predictive models for targeting CRM efforts for a large, national retail client. Their client service, coupled with their ability to quickly absorb both business requirements and data complexities, was first rate. I highly recommend this team!”

– Dr. Frederick Barber, Chief Analytics Officer, Meredith Xcelerated Marketing
Rexer Analytics has provided analytic strategy advice and trained analytic teams for large retail clients in Asia, Europe, and North America.  Analytic work also includes:
  • Store staffing forecasts
  • Customer segmentation
  • Kiosk and product rental predictions to support site location decisions, product acquisition strategy, and kiosk stocking strategy
  • Analysis of product pre-launch metrics: determining best ones to estimate product launch success
“We’ve worked with Karl and his team in a variety of ways,including as consultants in developing new quantitative tools, as well as bringingthem in to help with client projects that were outside of our scope. We arevery selective about who we work with and introduce to our clients, and RexerAnalytics is a company we fully put our trust in.  They have exceptional expertise, passion, andare a joy to work with.”

– Todd Hoskins, Co-Founder, My-Take


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"We described to the NES / Rexer team the challenges we were having with our manual, time consuming, forecasting business process.  They were great in understanding our needs and proposing a cost-effective IBM SPSS Forecasting solution.  The NES / Rexer team also piloted the solution using our own data — helping us see the software’s ease-of-use and the business impact it could have.  They trained our staff, helping us get up to speed quickly making our own forecasts, and were available for follow-up support when questions arose.  The SPSS Forecasting software has improved our productivity, enabling our staff to deliver better forecasts in less time.  The software provides consistency in the execution of our forecasting, allowing us to respond to rapidly changing business conditions and demands.  We are now using the analytic capabilities of the SPSS tool to improve global demand and product planning.  The NES / Rexer team is partnering with us as we explore other areas of our business that can be enhanced with analytics."

– Becky Pecco, Global Demand Manager, The Siemon Company
"Karl and his team are advanced analytics wizards!  Their work for HP provided insight and actionable results.  I highly recommend Rexer Analytics!"

– Donna Ross, Business Intelligence, EDW Governance & Portfolio IT Manager, Hewlett-Packard
"I used Karl's organization as an extended team to supplement my direct staff.  His team fit in seamlessly with my direct reports and delivered value while partnering with the direct staff.  Karl's team worked on projects that they managed along with projects managed by my direct staff.  I would recommend Rexer Analytics to other firms that are seeking help with their analytic challenges. They fully understood our business needs and constructed analytic solutions that focused on those needs. They are very responsive and bring the appropriate technical skill and knowledge to solve the business issue at hand.  Top notch client relations as well."

– Ned Cullen, Manger, World Wide Marketing Analytics, Hewlett-Packard
"The Rexer Analytics team offers a unique combination of talented professionals who are also patient and personable teachers. Our engagements with Rexer started with SPSS Statistics and Modeler classes and consulting on predictive models. Our group was immediately able to benefit from Rexer’s training to explore new forecasting methods and build models identifying traits of unprofitable customers. Over time Rexer Analytics effectively worked as a natural extension of the Redbox team. At times we had project teams comprised of both Redbox and Rexer staff, but were also able to outsource entire projects to Rexer.  One particularly impactful project included a set of targeting models built by the Rexer team – these models identified kiosks with the best potential for niche genre movie rentals. I would highly recommend Rexer Analytics whether your team wants to learn the basics of predictive analysis or needs additional expertise in solving one of your most difficult challenges."

– Kristen Olson, Sr. Manager, Consumer Insights & Analytics, Redbox
Rexer Analytics has designed and built analytic solutions to support both strategic and tactical decisions for clients in these industries, including:
  • Customer loyalty and attrition analyses and prediction
  • Surveys and analyses to determine drivers of amusement park satisfaction
  • Targeting models for driving large event attendance
  • Evaluation and prediction of movie title rental by site and genre
  • Surveys to assess customer media consumption preferences

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"Rexer Analytics hit a grand slam for us!  Their expertise and mastery of data mining and predictive analytics found important patterns in our data where others had failed.  They built multiple predictive models that predicted things like student success, the likelihood of a student dropping out of college, and the likelihood of a student defaulting on their student loans.  And Karl was outstanding when presenting the information to non-technical audiences.  His slides and explanations were clear and resonated with the audience.  Karl and his team were amazing to work with and I would hire them again in a heartbeat."

– Robert Reeder, CIO, Cegment, Inc.
"Working with Rexer Analytics is an initiative that has helped to continuously improve our admissions process at Inter American University, Metro Campus. Annual survey reports and insightful analyses provide excellent information about the needs of applicants, aid in the decision making process and in getting better results."

– Marilina L. Wayland, Chancellor, Inter American University of Puerto Rico, Metro Campus
Rexer Analytics has built predictive models and conducted survey research to help colleges and universities in many areas:
  • Models to help target student acquisition efforts
  • Models to identify students at risk of dropping out
  • Models to identify students at risk of defaulting on student loans
  • Surveys to improve understanding of student needs and preferences
"Rexer Analytics supported Faze1 while we were in our infancy. Our first product supported the residential solar industry in identifying the most valuable potential solar customers in Massachusetts. Using our domain knowledge and data mining expertise, combined with Rexer Analytics’ predictive modeling capabilities, we created a unique scoring algorithm that allowed residential solar marketers to target homeowners with the greatest propensity to adopt solar energy and who lived in a home with a roof that could facilitate a solar PV system. Rexer Analytics provided Faze1 with affordable, top-notch statistical work. We highly recommend them to anyone seeking analytic project work or analytic strategy guidance."

– Marc Guy, CEO, Faze1


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mcgraw hill constructionpalladium executing strategy
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jet advisorsforbes consulting
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"Rexer Analytics assisted our international PwC benchmarking team in the production of our 2013 and 2015 Corporate Finance white papers. They did an awesome job, as always. As good as Karl and his team of Paul and Heather were two years ago, they upped the result this time around. Their data analysis, ad hoc data fulfillment, writing, editing, proofing, project management, dozens and dozens of interviews and, not the least, positive attitude and continuous assistance were tremendous."

– Ed Shapiro, Director, Finance Effectiveness, PricewaterhouseCoopers
"The models created by the Rexer Analytics team enabled us to target our retention efforts and take immediate action to retain at-risk customers.  The insights from their analyses also enabled us to make strategic decisions which boosted customer lifetime value."

– Betsi Harris;  Director, Operational Excellence, Training & Quality Assurance/Compliance, Tyco Integrated Security;  Author of “Transactional Six Sigma and Lean Servicing: Leveraging Manufacturing Concepts to Achieve World Class Service”
"The Rexer team is great to work with.  Over a period of several years Rexer Analytics helped Palladium Group with a number of analytic projects on our Balanced Scorecard benchmark database and our Hall of Fame reporting.  They have outstanding analytic skills, and their creative data visualizations made the analytic results clear.  The team was also very responsive to our evolving needs.  I look forward to working again with Rexer Analytics and highly recommend them to other companies needing advanced analytic solutions.  I plan to have them conduct the analyses of our upcoming global survey of municipal executives."

– Randall Russell;  (Past) Vice President and Director of Research, Palladium Group;  (Current) Managing Director, Alliance for Municipal Performance
"Rexer Analytics is my firm’s partner of choice for quantitative research and analysis.  They are superior data scientists, rigorous in the research approach, ethical and provide outstanding customer support.  They are always willing and happy to support our strategic research needs with a wide range of studies, tools and methods.  As a fellow researcher, I enjoy working with them and they always deliver high value to every engagement they work on."

– Vanessa DiMauro;  CEO & Chief Digital Officer, Leader Networks;  Board Director & Research Co-Chair, Society for New Communications Research;  Author of “The New Symbiosis of Professional Networks: Social Media's Impact on Business and Decision-Making”
"Rexer Analytics provides outstanding and affordable statistical analyses of customer behavior and trends.  We used them to tell us which customer segments we need to target to increase profits and which segments we needed to stay away from.  Their analysis was extremely well presented and very clear.  I would highly recommend Rexer Analytics to anyone.  They are the first firm I call for any data mining and statistical work."

– Steve Cumbow, Chief Financial Officer, Coverall Cleaning Concepts
Organizations have engaged Rexer Analytics to build predictive models for campaign targeting and to conduct survey research to improve the understanding of member needs.


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“Rexer Analytics helped our cancer MIT Macro-epidemiology team manage and analyze large volumes of data. They extracted the data we needed from annual US mortality records (over 2 Million per year), and enabled us to add ten additional years to our disease, gender, age and ethnicity-specific mortality rate analyses. The easy availability of this data on our Mortality Analysis website is extremely valuable globally to researchers investigating disease causation and the efficacy of medical interventions. And it would not have been possible without the work of the Rexer team. Examples of the medical insights enabled:

  • Testing (and supporting) the hypothesis that deaths from colon cancer arise from two (and only two) separate genetic changes in the stem cell lineage that forms the colon, and additionally that such changes occur only in the fetal/juvenile period.
  • The website’s mortality curves illustrate and confirm the role of cigarette use in lung cancer.  Lung cancer rates rise in males about 25 years before a similar rise is seen in females - concordant with the sudden historical rise in cigarette use by males starting in 1900 and by females around 1925. Contrary to widespread belief, the data show no changes in cardiovascular or cerebrovascular death rates following increases in the cigarette habit.
  • Controversially, but in accord with what many oncologists have suspected, the website shows breast cancer death rates did not decline between 1900 and 2010 in older women, despite the introduction of mammography and the purported successes of x-ray and chemo-therapies.

Without the contributions of Rexer Analytics to this public health project, it simply could not continue to be improved and updated regularly. Karl also helps the team with data graphics and trains junior staff to use statistical software. Their ability and enthusiasm invigorate the larger team. Rexer Analytics is a true friend and trusted colleague to MIT Macro-Epidemiology."

William G. Thilly, Sc.D., Professor of Genetics, Toxicology & Biological Engineering, Massachusetts Institute of Technology