Table 1: Revision information and T-Test for statistical significance for quarterly GDP growth
,T + 3,,,,,T + 24,,,,,T + 36,,,
Timespan,"Mean
revision
(pp)","Absolute
average
revision
(pp)",T Score²,"Statistically
significant",,"Mean
revision
(pp)","Absolute
average
revision
(pp)",T Score²,"Statistically
significant",,"Mean
revision
(pp)","Absolute
average
revision
(pp)",T Score²,"Statistically
significant"
"1961 Q2
to 2016 Q4¹",0.01,0.06,1.0661,No,,0.04,0.51,0.8823,No,,0.11,0.53,1.9571,No
"1961 Q2
to 1969 Q4¹",n/a,n/a,n/a,n/a,,-0.01,0.69,-0.0606,No,,0.06,0.79,0.3830,No
"1970 Q1
to 1979 Q4¹",n/a,n/a,n/a,n/a,,0.08,0.91,0.4800,No,,0.20,0.98,0.9649,No
"1980 Q1
to 1989 Q4",0.03,0.06,1.3791,No,,0.09,0.80,0.5539,No,,0.18,0.71,1.2704,No
"1990 Q1
to 1999 Q4",0.01,0.07,0.4767,No,,0.06,0.18,1.7550,No,,0.10,0.22,2.5717,Yes
"2000 Q1
to 2009 Q4",0.00,0.11,0.0659,No,,0.01,0.23,0.1981,No,,0.00,0.27,-0.0817,No
"2010 Q1
to 2016 Q4",0.02,0.07,1.3457,No,,0.01,0.16,0.2444,No,,0.07,0.16,1.9558,No
Source: ,Office for National Statistics – UK National Accounts
Notes
1,Due to the compilation process at the time T + 3 has no revisions pre 1980.
2,Two tailed standard significance test at 95% confidence interval.