Table 1: There is some evidence that revisions are marginally statistically significant when looking at the final estimate
"Revision information and t-test for statistical significance for quarterly GDP growth, UK, Quarter 2 1961 to Quarter 4 2019"
,T + 3,,,,T + 36,,,
Timespan,"Mean
Revision
(pp)","Absolute
Average
Revision
(pp)","T
Score
2","Statistically
Significant?","Mean
Revision
(pp)","Absolute
Average
Revision
(pp)","T
Score
2","Statistically
Significant?"
"1961 Q2
to
2019 Q4 1",0.03,0.23,1.51,No,0.12,0.53,2.28,Yes
"1961 Q2
to
1969 Q4 1",,,,,0.03,0.23,1.51,No
"1970 Q1
to
1979 Q4 1",,,,,0.28,1.04,1.31,No
"1980 Q1
to
1989 Q4",0.10,0.34,1.56,No,0.20,0.72,1.35,No
"1990 Q1
to
1999 Q4",0.01,0.12,0.37,No,0.10,0.22,2.57,Yes
"2000 Q1
to
2009 Q4",0.00,0.12,0.18,No,0.00,0.27,-0.03,No
"2010 Q1
to
2019 Q4",0.02,0.06,1.40,No,0.07,0.16,1.80,No
Source: ,Office for National Statistics
Notes
1,"Because of the compilation process at the time, t plus three months has no revisions pre-1980."
2,Two tailed standard significance test at 95% confidence interval.