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The Statistical Consulting Collaboratory at UC – Riverside Daniel R. Jeske, Director Department of Statistics Theodore Younglove, Manager August 3, 2004. Topics Covered The Mission at UCR Our Staff A Glimpse of Who We’ve Been Working With Our Link to Graduate Student Training.

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slide1

The Statistical Consulting Collaboratory at UC – Riverside

Daniel R. Jeske, Director

Department of Statistics

Theodore Younglove, Manager

August 3, 2004

  • Topics Covered
  • The Mission at UCR
  • Our Staff
  • A Glimpse of Who We’ve Been Working With
  • Our Link to Graduate Student Training

www.collaboratory.ucr.edu

slide2

Provide statistical support services to UCR faculty and students

  • Planning Experiments, Archiving Data
    • Statistical Analyses, Statistical Software Subject Matter Support
    • Help with Responses to Referees, Help with Proposal Writing
  • 2. Research collaborations with faculty and graduate students when new
  • statistical ideas, interpretations and approaches are needed
  • Extension of services and collaborations objectives to public service efforts,
  • with concentration on the greater Inland Empire area and various government
  • agencies
  • Enhance instructional effectiveness by facilitating “hands-on” consulting
  • experience for Statistics students, coordinating campus-wide
  • workshop opportunities, and providing fully outfitted computing and
  • information management laboratories.

The Statistical Consulting Collaboratory at UC-Riverside

www.collaboratory.ucr.edu

slide3

A Brief History of Statistical Consulting at UCR

Initial Leadership for a Statistical Consulting Laboratory was from Department of Statistics – Beginning around 1994 with

Prof. David Strauss, Emeritus

Prof. Keh-Shin Lii

Prof. Robert Beaver

Service was unofficial, in a volunteer mode motivated by Labors of Love and a sense of Professional Responsibility.

Idea conceived in 2001 for an Official Director of a Statistical Consulting Collaboratory

with joint support from College of Natural and Agricultural Sciences, College of Humanities, Arts and Social Sciences and the Office of Computing and Communications.

Funds were provided for a staff position (Manager) and a faculty position in the Department of Statistics (Director) to provide the leadership for upholding the reputation of what had already been established and to grow the initiative in both the on-campus and

off-campus dimensions.

www.collaboratory.ucr.edu

slide4

Our Staff

Daniel Jeske, Director

Ted Younglove, Manager

Junmei Liu

Grad Student RA

Yang Yang

Grad Student RA

www.collaboratory.ucr.edu

slide5

Undergrad

Student

No Fee

Submit Query

A Question thru

“Ask A Statistician”

Handled thru

Individual Faculty

Participation

Handled thru

Statistics 293 under

Guidance of Director

Handled by GSRs

Under direction of

Manager or Director

Collaboratory Project Funnel

A

Yes

All consulting fees go to the support

of the GSRs, equipment, travel costs,

and supplies for the collaboratory.

Yes

No

Class

Project?

No

Client chooses between following options

depending on time and cost constraints

Zero cost,

no promise for

complete solution

Increasing Hourly Rate, Decreasing Turn-Around-Time

www.collaboratory.ucr.edu

slide6

Clients in the Statistical Collaboratory

2003

2004

Clients

Served

9/1/2003

4/21/2004

Elapsed Time

www.collaboratory.ucr.edu

slide7

A Profile of Our Clients During the 2003-2004 Academic Year

Consulting Fees

On-Campus Rate: $62/hour

Off-Campus Rate: $105/hour

Consulting revenues are 100% invested

in supporting graduate students who

work in the Collaboratory

www.collaboratory.ucr.edu

slide8

Scope of Statistical Techniques

  • Repeated Measures Analysis
  • Sample Size Determination
  • Reliability Modeling with Preventive Maintenance
  • Split-plot ANOVA
  • Queuing analysis
  • Probit Regression
  • Contrasts in a Randomized Block Design
  • Principal Component Analysis
  • Binomial p confidence intervals
  • G2 test for equal Binomial p-values
  • Non-linear regression
  • Concordance Correlation
  • Bootstrap bias correction
  • Inter-rater reliability measures
  • Analysis of Covariance
  • Polytomous Regression
  • Hypothesis Testing with Ordered Alternatives
  • Sequential Hypothesis Testing
  • Mixed Model Inference Procedures
  • Estimation of Brownian Motion parameters
  • Multiple Comparison Procedures
  • Tolerance Intervals
  • Survival Analysis

Project was

Utilized in Statistical

Consulting Class

www.collaboratory.ucr.edu

slide9

Other Collaboratory Resources

Help Desk

Staffed TBD hours/week for assistance with walk-in

questions about statistical software

Statistical Computing Laboratory

Free access to computer labs equipped with PCs running site licenses for

Statistics packages (SAS, R/Splus, SPSS, Minitab, Stata, MatLab) and

simulation software (OPNET).

Instructional PC classrooms equipped with client-server software to

broadcast teacher-to-student analysis demonstrations

Sponsored Workshop Colloquium Series

2003 program included talks on GIS Systems and Social Network Analysis

2004 program: STATA workshop (completed), SAS Day (completed),

Statistical Methods in Genetics (upcoming),

Comparison/Contrast of Statistical SW packages (upcoming)

www.collaboratory.ucr.edu

slide10

Survivor Functions With Preventive Maintenance

March AFB

Weibull (2,22.57) Lifetime Distribution

Expected Life = 20 Years

Smooth Curve: No Preventive Maintenance

Preventive Maintenance at T=15.5 Years

(Years)

http://www.collaboratory.ucr.edu

www.collaboratory.ucr.edu

slide11

Waiting Time Distribution for Alternative Number

of Machines (Treadmill)

UCR Student

Recreational Center

M=1

M=5

M=8

M=9

M=10

M=11

M=12

M=15

M=20

Current number

Of machines, M = 10

Probability

Wait Time > t

Waiting Time (minutes), t

www.collaboratory.ucr.edu

slide12

Level 2 Task 1

Level 2 Task 2

Polychotomous Regression for Scores on Two Writing

Tasks Taken By Two Levels of Students

La Sierra University

Graduate Students

Level 1 Task 1

Level 1 Task 2

www.collaboratory.ucr.edu

slide13

Bioassay Study of Four Fly Repellants

Department of

Entomology

www.collaboratory.ucr.edu