Annual Survey of Industries - 1999 - Sri Lanka

Abstract
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The Objectives of the Annual Survey of Industries are:

1. To provide indicators of the performance and the structure of the industrial sector.
2. To update the list of industrial establishments already available.

Geographic coverage
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National Coverage.

Analysis unit
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Industrial establishments

Universe
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All industries with 5 or more persons engaged.

Kind of data
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Sample survey data [ssd]

Sampling procedure
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ASI is predominantly a postal survey . But Staitistical Officers are sent to the non responding establishments to get the questionnaires completed.

Sampling deviation
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All industrial establishments with 5 or more persons engaged is the target population of ASI. The list of industries with 5 or more persons as in the Census of Industry - 1983 was the frame ( sample population ) of ASI.

The whole frame was divided into two sectors as establishments with 25 or more persons engaged and establishments with 5-24 persons engaged. All establishments in the 25 or more sector ( census part ) and probability sample of 5 to 24 sector (survey part ) were canvassed. The census part of the frame updated from time to time and the survey part remained unchanged.

The survey part was further stratified according to the geographical locations, industrial activity and size. Geographical strata were 24 administrative districts. Industrial activities were defined as the industry group levels 4 digit level of ISIC. The persons engaged size classes which were defined as 5-9, 10-14 and 15-24 persons engaged were used as the size strata.

There were approximately 2500 establishments in the census part and approximately another 2500 were selected for the sample out of about 12000 industries. Higher probabilities were given to select rare industries. The sample was selected systematically within the strata.

Mode of data collection
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Mail Questionnaire [mail]

Research instrument
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There were 18 questions in the questionnaire. The first 12 questions were on identification information. Questions 13-16 were on inputs and output and question number 17 and 18 were about the investment and labor of the establishments. The value of goods moved out, receipt of industrial services done for others and opening and closing stocks of output were collected to compile the gross output. Input were the addition of value of raw materials consumed of the year 1999. (i.e. Cost of raw materials adjusted for stocks ) and the consumption of electricity, fuel and water. Book value at the beginning of the year, gross additions during the year, and Depreciation were canvassed under the four components of fixed assets namely, Land, Building and Other Constructions, Machinery and Other Equipments and Transport Equipments. The information on employment and earnings, was collected under two sub categories National and Non-Nationals. The number of mail and female national persons engaged were collected separately, but salaries were canvassed only for the total number of employees. In addition to the above non-national employees and their salaries also were canvassed.

Response rate
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Non Response Adjustments

It was tried to collect information from all the largest establishments ( establishments with over 500 million rupees output). The non responses of the sample were automatically imputed when applying weights. The other establishments were imputed using previous year's information whenever available or, otherwise using the either district or province averages of the category which the establishment belongs.

摘要
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本年度产业调查的目标包括：
1. 提供关于产业部门性能与结构的指标。
2. 更新现有工业企业的名录。
地理覆盖范围
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全国范围。
分析单位
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工业企业
总体
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所有拥有5人或以上员工的产业。
数据类型
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抽样调查数据 [ssd]
抽样程序
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产业调查（ASI）主要以邮政调查为主。但统计官员会前往未回应的工业企业，以获取完成的问卷。
抽样偏差
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所有拥有5人或以上员工的工业企业构成ASI的目标总体。1983年产业普查中拥有5人或以上员工的产业列表构成了ASI的框架（样本总体）。
整个框架被划分为两个部分：拥有25人或以上员工的工业企业（普查部分）和拥有5-24人员工的工业企业（调查部分）。普查部分的框架会随着时间的推移而更新，而调查部分的框架保持不变。
调查部分进一步按照地理位置、产业活动及规模进行分层。地理位置分层为24个行政区域。产业活动定义为ISIC四级产业分组水平。人员规模类别定义为拥有5-9人、10-14人和15-24人的规模层。
普查部分约有2500家企业，另外约2500家从大约12000个产业中选出作为样本。对于稀有产业，赋予了更高的选择概率。样本在层内系统性地选取。
数据收集方式
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邮寄问卷 [mail]
研究工具
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问卷中包含18个问题。前12个问题涉及识别信息。第13-16个问题涉及投入与产出，第17和第18个问题则关于企业的投资与劳动力。收集商品移动价值、为他人提供工业服务的收入以及产出的期初和期末库存，以编制总产出。投入包括1999年消耗的原材料价值的增加（即调整库存的原材料成本）以及电力、燃料和水的消耗。在固定资产的四个组成部分——土地、建筑物及其他构筑物、机械设备及其他设备以及运输设备下，调查了年初账面价值、年度总增加额和折旧。关于就业和收入的信息在国民和非国民两个子类别下收集。分别收集了邮件和女性国民员工的数量，但仅对总员工数进行了薪资调查。此外，还调查了非国民员工及其薪资。
回复率
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非响应调整
试图收集所有最大规模企业（年产出超过50亿卢比的企业）的信息。在应用权重时，样本的非响应自动进行了填补。其他企业则在使用往年信息（如有）或使用所属类别所在地区或省份的平均值进行填补。