Transcript Tanzanian experience on manufacturing statistics

Tanzanian Experience
on manufacturing
Statistics.
Williamdm Ndoss
National Bureau of Statistics
Dar es Salaamia
Tanzania
1
Estimation of sector
contribution to GDP
The manufacturing sector
contributes about 8.7% of the
total GDP in Tanzania
according to 2007 Economic
survey report.
2
Source of data
• Industry Census
• Annual Survey of Industrial
production
• Quarterly Survey of
Industrial production
3
Industry Census
• Last Industry Census was
Conducted in 1989.
4
Annual Survey of
Industrial production
• The survey covers 10
persons or more
establishments engaging.
• About 700 establishment
are surveyed
5
Quarterly Survey of
Industrial production
The survey is limited to
manufacturing industry and
covers almost allmanufacturing establishments
engaging 50 persons or more.
About 400 establishment are
surveyed
6
Activity classification
and the ISIC
Tanzania is using ISIC
Rev. 3.
7
Statistical Unit
• The Statistical Unit is the
Establishment.
8
The Register of
Establishments
- Tanzania has a central register of
establishment (CRE) which is
updated annually.
- Business survey was conducted
2008, which saved as an input to
update CRE.
9
Uses of registers
• Provide frame for
undertaking surveys
10
Main Derived Statistics
• Producer Price Index (PPI)
• Production Index of
Manufacturing Industry
(PIMI)
11
Methods and techniques
of data collection
• Mail enumeration
12
Imputations
Substitution: Relies on the
availability of comparable
data
13
Challengers
• Low response rate
• Misuse of resources Duplication of efforts
14
Dissemination
• Through NBS website:
WWW.nbs.go.tz
• National Website:
www.tanzania.go.tz
• Different reports.
15