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5.2.2 Levels of detail are adapted to the needs of the intended audience.
• Different levels of metadata are made available to meet users’ requirements.
The metadata for PPI statistics are available to meet users’ requirements and can be accessed on NBS website. The metadata summarize the key information of statistics for easy understand of PPI indicators.
5.3 Assistance to users
5.3.1 Contact points are publicized.
• Adequate assistance is given to users of statistics.
Prompt and knowledgeable service and support are available to anyone who needs assistance on PPI products. The NBS address is provided at the end of the PPI release for easy access by users. PPI release information is posted at NBS website, and technical assistance is given to users through face-to-face interactions, phone calls, and emails.
Outreach programs and participation on local and international exhibition is provided to raise awareness on the use of PPI.
5.3.2 Publications, documents, and other services, including information on any charges, are widely available.
• Publications and other services are available to users of statistics.
The PPI release document is available to users on the NBS website and it is updated on quarterly basis. The prices of commodities are disclosed free of charge upon request.
- Conclusion In general, the assessment results reveal that the business processes for production of PPI complied to all dimensions as follows: On Prerequisites of quality, the NBS has broadly effective legal frameworks (the Statistics Act, CAP. 351) to support the compilation and dissemination of PPI statistics. On Assurances of integrity of NBS, the Statistics Act, CAP. 351 clearly assure the professional independence of the Bureau. Recruitment and promotion of staff are
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mostly based on competence and expertise in specific subject areas. Staff are given
every opportunity to take part in training courses and seminars.
On Methodological soundness, the general framework for compiling the PPI is the
PPI Manual 2004.
On Accuracy and Reliability, several procedures are followed, such as supervision of
data collection, manual editing of questionnaires, and outlier checks during data
processing. Data sources from which prices are collected are sufficient to compile
statistics on producer prices.
On Serviceability, the quarterly PPI is disseminated within two months after the end
of reference quarter.
On Accessibility of data, PPI are published in a clear manner with charts and tables
that make the data easily understood by users.
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- Recommendations S/No Dimension Recommendation
Prerequisites of Quality
• Budget allocated for production of PPI
should be prioritized, sufficient and
ringfenced by the government.
• Continue providing more trainings on
PPI and related field to staff so as to
upgrade their skills and knowledge
which will enable them to improve
production of quality statistics.
1.
Assurances of integrity
• Continue creating awareness on ethical
standards
for
the
betterment
and
protection of statistics professionalism.
• Induction course for the new recruited
staff should be emphasized and the
copies of Staff Regulation and Codes of
Ethics and Conduct documents should be
provided to the staff.
2.
Methodological
Soundness.
• Worksheet for PPI compilation should
Include Central Product Classification
(CPC) code to classify products.
• Prepare documents for each important
activity during the compilation of PPI.
3.
Accuracy and Reliability
• Periodic studies and analyses of updates
should
be
conducted
and
utilized
internally to enhance statistical processes.
Findings from these studies, including
insights into other sources of errors/ bias,
should guide the determination of
optimal revision cycle. This cycle should
primarily be driven by the availability of
key
data
sources,
ensuring
implementation of changes to the PPI.
4.
Serviceability
• Efforts should be made to rebase the PPI
every five years. This will increase the
proper representation of price trends in
this fast-changing world.
• Regular Studies and revisions should be
done and shared to the public.
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Accessibility • Metadata should be updated during rebasing. • The public should be informed whenever there is any adjustment and review of the PPI.
- References
- IMF’s Data Quality Assessment Framework (DQAF), May 2012
- The Statistics Act, CAP. 351 (R.E 2019)
- NBS Strategic Plan 2021/22-2025/26
- Tanzania Statistical Master Plan 2022/23 – 2026/27 (TSMP II)
- Tanzania Data Quality Assurance Framework (TDQAF) for Official Statistics 2024
- Manual for Strengthening and Integrating Administrative Data into National Official Statistics of Tanzania 2024
- The 2004 Producer Price Index Manual Theory and Practice
- The System of National Accounts (SNA) 2008
- Industrial Statistics Guidelines and Methodology 2010
- Advance Release Calendar
- NBS Staff Regulation, Scheme of Service