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一、定基发展速度和环比发展速度:定基发展速度是报告期与某一固定基期之比。公式:(a_1/a_0)(a_2/a_0……a_(n-1)/a_0)(a_n/a_0),式中:a_1-报告期水平,a_0-基期水平,如1983年的工作量为417,142,1953年工作量为76,369则1953年至1983年的定基发展速度为546.2％。环比发展速度是报告期水平与前一期水平之比,说明报告期水平对前一期来说已发展到多少倍。公式:(a_1/a_0)(a_2/a_1……a_(n-2)/a_(n-1)(a_n/a_(n-1))1983年的工作量为417,142,1982年的工作量为393,574,1982年至1983年的环比发展速度为106.1％。二、平均发展速度指标:平均发展速度需用几何平均数法,公式为(?)_G=
First, the pace of development of the fixed base and the growth rate of the loop: The speed of the fixed base development is the ratio of the reporting period to a fixed base period. Formula: (a_1/a_0)(a_2/a_0...a_(n-1)/a_0)(a_n/a_0), where: a_1-report period level, a_0-base period level, eg, 1983 workload is 417,142 In 1953, the workload was 76,369. From 1953 to 1983, the base development rate was 546.2%. The growth rate of the chain is the ratio of the level of the reporting period to the level of the previous period, indicating how many times the level of the reporting period has developed for the previous period. Formula: (a_1/a_0)(a_2/a_1...a_(n-2)/a_(n-1)(a_n/a_(n-1)) The workload in 1983 was 417,142, and the workload in 1982 was 393,574, the ring growth rate was 106.1% from 1982 to 1983. Second, the average development speed index: the average development speed needs to use the geometric average method, the formula is (?)_G =