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Quarterly Investments Quarterly Investments StatisticsStatistics
How to compute final investments and analyzing estimated investments…
Presentation at STESWP 2007
Lasse Sandberg, Statistics Norway
STESWP, 25-27 June 2007
Oil and Gas – driving force in the economy
0 %
20 %
40 %
60 %
80 %
100 %
1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006
Oil and Gas Electricity Supply Manufacturing and Mining
STESWP, 25-27 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, 1 900 Establishments Oil and Gas: Total, 220 Enterprises
– Data collection Questionnaires
STESWP, 25-27 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, 25-27 June 2007
Quarterly Investments Statistics – distribution of investments
Final Investments (First quarter 2007)
0
50 000
100 000
150 000
200 000
250 000
300 000
350 000
400 000
450 000
1 77
15
3
22
9
30
5
38
1
45
7
53
3
60
9
68
5
76
1
83
7
91
3
98
9
10
65
11
41
12
17
12
93
13
69
14
45
15
21
15
97
16
73
17
49
18
25
10
00
NO
K
STESWP, 25-27 June 2007
Distribution of investments – top 10 per cent
0
50 000
100 000
150 000
200 000
250 000
300 000
350 000
400 000
450 000
1 9 17
25
33
41
49
57
65
73
81
89
97
10
5
11
3
12
1
12
9
13
7
14
5
15
3
16
1
16
9
17
7
18
5
10
00
NO
K
STESWP, 25-27 June 2007
Quarterly Investments Statistics – from sample to populationStratum 1 The largest projects (in
each publication level)Average investments in the ratio-period >= 99,5 percentile
Stratum 2 Large investments (in each publication level)
Average investments in the ratio-period >= 95 percentile
Stratum 3 Medium-sized investments (in each publication level)
Average investments in the ratio-period >= 90 percentile
Stratum 4 Small or no investments (in each publication level)
Average investments in the ratio-period < 90 percentile
STESWP, 25-27 June 2007
Final Investments for Manufacturing
Final Investments in population and sample
1 0002 0003 0004 000
5 0006 0007 0008 000
1 M
ill
NO
K
Population Sample
STESWP, 25-27 June 2007
Estimated Investments prior to final…
65
70
75
80
85
90
95
100
105
110
Per
cen
t
May the year beforeinvestment year
August the year beforeinvestment year
November the year beforeinvestment year
February in the investmentyear
May in the investment year
August in the investmentyear
November in the investmentyear
