Statistician



UCI Series Concepts -- UCI SIZE-NEUTRAL SUPPLEMENTAL GUIDELINES

Class Specifications - F.15
Principal Statistician - 7211 -- SIZE-NEUTRAL
Senior Statistician - 7212
Statistician - 7213
Assistant Statistician - 7214

May, 1978 -- SIZE-NEUTRAL MARCH 1995
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SERIES CONCEPT

Statisticians perform professional statistical work Using a 
variety of standard statistical methods and programming 
techniques in order to complete assignments; and perform other 
related duties as required.

Incumbents typically select appropriate test formulas and perform 
standard computations such as multiple and partial correlation 
coefficients, t-tests, Chi-square, nonparametic tests, and 
analysis of variance working from written or verbal instructions; 
prepare control cards to adopt particular computer programs for 
selected research problems, which may include such factors as n-
way analysis of variance, analysis for unbalanced design, 
discriminant analysis and step-wise regression; perform 
complicated computations independently on research problems such 
as regression analysis, analysis of covariance where the design 
is not complex and the mathematical model is relatively simple; 
participate in meetings with departmental representatives for the 
purpose of modifying codes, designing and changing forms, and 
making reports during selected long-term projects; and are 
assigned responsibility for the processing of precoded data and 
the preparation of related reports.

Incumbents may supervise the work of lower level statisticians 
and related personnel in the performance of coding and data 
collecting duties; may be assigned responsibility for 
recommending specific revisions in statistical codes, requiring 
library research and consultation with subject-matter 
specialists; may set up specifications for computer programming 
problems as required; may develop data screening programs for 
computer application using FORTRA.N, PL/l,  ALGOL or other 
compatible programming languages; may instruct lower level 
statisticians and related personnel on the techniques of coding, 
statistical computations and utilization of equipment; may do 
computations involving new techniques which have been pretested; 
and may develop cost estimates as required.

The Statistician series consists of four levels with the 
distinction between levels based on the scope and complexity of 
statistical functions and the degree of involvement in program 
planning.

                           CLASS CONCEPTS

Principal Statistician

Under direction incumbents are assigned responsibility for 
program planning and/or for consultation and analysis requiring 
advanced knowledge and significant methodological innovation; and 
perform other related duties as required.

Incumbents may direct the activities of a statistical unit which 
typically involve performance of functions such as determination 
of staff and budget needs, making of staff work assignments, and 
development of effective evaluation procedures, and training and 
supervision of unit employees. Incumbents assist in planning 
research designs on complicated problems or large-scale studies 
which may result in contracts or grants, and make job cost 
estimates; determine from discussions the purposes and objectives 
of various studies, the previous research done on problems, the 
scope, methods of approach to problems, and the restrictions 
inherent in experiments; make recommendations regarding Possible 
alternative approaches or modifications of scope or objectives in 
order to develop effective research plans; meet with 
investigators to discuss possible statistical analyses of their 
research data; interpret results to investigators after 
completion of staff analys.is; and meet with principal 
investigators, consultants, representatives from granting 
agencies as necessary to establish overall policies and 
procedures relating to selected projects.

Incumbents may perform statistical consultation and analysis 
requiring advanced and current knowledge of statistical theory 
and the ability to develop new methodology to meet novel 
requirements. Examples of such activity include development of 
statistical models in new areas of application and derivation of 
inference procedures using maximum likelihood, Bayesian or other 
principles; and specification of usage of new statistical methods 
with appropriate attention to tests of assumptions, numerical 
accuracy and correct interpretation of results.

Senior Statistician

Under direction, incumbents perform complex professional 
statistical work and inaddition may supervise lower level 
statisticians and related personnel; and perform other related 
duties as required.

Incumbents typically spend a majority of time working on one or 
more of the following tasks, such as adaptation of mathematical 
statistical models for novel analyses of technical data, 
independent consultation with department representatives and 
principal investigators, and planning and implementation of major 
study projects; advise principal investigators on appropriate 
experimental designs and statistical tests in order that valid 
conclusions can be obtained; plan statistical analysis for 
research projects where designs are made complex by the numbers 
and kinds of variable number of levels of variables and/or 
interactions or relationships between variables consult with 
researchers to derive understanding of the hypotheses and 
experimental approaches; decide appropriate statistical analyses 
for balanced and unbalanced designs; develop mathematical models; 
determine feasibility of using electronic computers for 
computations; and select or write appropriate computer programs 
as necessary.

Incumbents may participate in planning meetings with 
representatives of cooperating institutions for purposes of 
relating medical and statistical aspects to resolve problems; may 
make job cost estimates on statistical analyses which require 
consultation with principal investigators; and may try out new 
statistical tests which are adaptations of accepted theories 
and/or principles of inference.

Statistician

Under general supervision incumbents perform professional 
statistical work as outlined in the Series Concept. This is the 
operational level of the series.

Assistant Statistician

Under supervision incumbents perform professional statistical 
work on a variety of problems typically restricted in difficulty 
and scope. Incumbents perform the majority of duties described in 
the Series Concept within established procedural guidelines. As 
examples of duties assigned to this level, incumbents perform 
routine statistical computations such as multiple and partial 
Correlation coefficients, t-tests, Chi-square and one-way 
analysis of variance; perform complex computations when formulas 
are setup and when specific instructions are given in their use; 
code raw data and design simple codes for machine processing; 
recode data combining and modifying categories; and plot curves 
from computer output and prepare final graphs for reports. This 
is the entry level in the professional series, however, positions 
may be assigned to this level on a continuing basis.

                      MINIMUM QUALIFICATIONS

Principal Statistician

Graduation from college with a major in statistics or a related 
field and six years of professional statistical experience 
including at least one year of pertinent supervisory experience; 
or an equivalent combination of education and experience; and 
knowledges and abilities essential to the successful performance 
of the duties assigned to the position.

Senior Statistician

Graduation from college with a major in statistics or a related 
field and four years of professional statistical experience; or 
an equivalent combination of education and experience; and 
knowledges and abilities essential to the successful performance 
of the duties assigned to the position.

Statistician

Graduation from college with a major in statistics or a related 
field and two years of professional statistical experience; or an 
equivalent combination of education and experience; and 
knowledges and abilities essential to the successful performance 
of the duties assigned to the position.

Assistant Statistician

Graduation from college with a major in statistics or a related 
field; or an equivalent combination of education and experience; 
and knowledges and abilities essential to the successful 
performance of the duties assigned to the position.

Note:  A Master's degree in statistics or a related field may be 
substituted for one year of the required experience.  
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