Loading...
AdminLTE Logo
  • PSRTI | Completed Research Studies
AdminLTE Logo PSRTI



Use of Time Series Analysis as an Alternative Methodology for Estimating Value of Missing Data in the MISSI and PPS

Year: 2009
Author:

Abstract:

Missing data is evident in the Monthly Integrated Survey of Selected Industries (MISS) and Producer Price Survey (PPS) due to late responses among sample establishments. A complete data set of sample establishments is key in yielding indices. Currently, the carry forward technique or cold deck imputation is the practice for handling missing data. This method uses historical imputation without trend adjustment, that is, the latest available data from the establishments is used to estimate for missing data. It produces rather crude estimates for other variables such as the value of production used in the MISSI. This study determined an alternative methodology for estimating value of missing data for both the MISSI and the PPS that will generate more reliable estimates. Using Eviews, time series analysis was executed to establish an operational methodology to forecast missing data resulting from non-responses in the MISSI and PPS. Comparisons on how the forecast values differ from the imputed values and actual data, and how the resulting indices using forecast values differ from using the imputed values and actual data were both obtained. This study recommends the implementation of the most appropriate forecasting methodology, however, the forecasting techniques have limitations. Yet the upper and lower limits of the forecasts values may be used as an option to determine the impact of unusual events, shocks or interventions.

Keywords:

File request
First name
Middle name
Last name
Email
Agency
DATA PRIVACY CONSENT/AGREEMENT

The Privacy Notice of the Philippine Statistical Research and Training Institute:

Personal Information and Purpose:

We shall be getting the following personal information from you when you electronically submit to us your registration form, inquiries, complaints, suggestions and other requests:

In the conduct of our research and training activities, you will be asked for pertinent personal information such as your name, age, gender, contact information, and other details. The personal information we collect will be used solely for documentation and processing purposes within the PSRTI and will NOT be shared with any outside parties. The data will also be used to provide clients and stakeholders updates and advisories of our statistical researches and training-related activities.

Protection of Clients Data/Information:

We give assurance that all personal information will be stored, secured and kept in strictest confidence by PSRTI where only authorized personnel can have access to online personal information. Collected/gathered information will not be shared to any unauthorized PSRTI staff or those from outside parties.

You hereby grant permission to PSRTI to:
  • collect, store and manage the data collected from you.
  • randomly capture photo/s for the purpose of research/training documentation to be used in marketing collaterals, ads, website and other marketing mediums of PSRTI.
  • use your e-mail to receive e-flyers and other brochures for marketing purposes.
Version 1.0.0
Copyright © 2020 psrti.gov.ph. All rights reserved.