1 Quarterly Investments Statistics How to compute final investments and analyzing estimated investments… Presentation at STESWP 2007 Lasse Sandberg, Statistics Norway

STESWP, June 2007 Oil and Gas – driving force in the economy

STESWP, June 2007 Quarterly Investments Statistics - sampling Two surveys –Population Manufacturing, mining and electricity supply (NACE 10, 13-14, 15-37, 40) Oil and Gas Activity (NACE 11, 60.3) –Sampling Manufacturing etc: Cut-off + PPS, Establishments Oil and Gas: Total, 220 Enterprises –Data collection Questionnaires

STESWP, June 2007 Quarterly Investments Statistics – from sample to population Estimation –From sample to population level Stratum 1:high level investments. All projects in the stratum must be covered in the sample of the investment statistics. Estimated by aggregating the sample values. Stratum 2-4:medium and small level investments, grossed up by ratio estimator –Why separate treatment of high level investments when grossing up and how to define level of investment?

STESWP, June 2007 Quarterly Investments Statistics – distribution of investments

STESWP, June 2007 Distribution of investments – top 10 per cent

STESWP, June 2007 Quarterly Investments Statistics – from sample to population Stratum 1The largest projects (in each publication level) Average investments in the ratio-period >= 99,5 percentile Stratum 2Large investments (in each publication level) Average investments in the ratio-period >= 95 percentile Stratum 3Medium-sized investments (in each publication level) Average investments in the ratio-period >= 90 percentile Stratum 4Small or no investments (in each publication level) Average investments in the ratio-period < 90 percentile

STESWP, June 2007 Final Investments for Manufacturing

STESWP, June 2007 Estimated Investments prior to final…