A Times Series Analysis Of Monthly Sales Of Petrol In A P'etroleum Filling Station: A Case Study Of Conoil Plc, 25 Aba Road, Umuahia, Abia State
ABSTRACT
Time series approach was used to
study sales data in a filling station. The data were collected from a Conoil
Petrol Station in Umuahia. The distribution of Autocorrelation and Partial
Autocorrelation functions suggested a Seasonal Autoregressive Integrated Moving
Average Model, given by SARIMA (1, 1, 1) X (1, 0, 0)12. The parameters of the
SARIIMA were estimated with statistical software MTNITAB). The following
mathematical model was obtained: Yt= °°565Yt..i + °•7207Yt...12 — ° 0407Yt-13 +
et - 1.0097 et_i From the above model, estimates and two years forecast were
obtained. The correlogram of the residual explains a pure white noise process
for the error of the model.
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ONYEKWERE, B (2021). A Times Series Analysis Of Monthly Sales Of Petrol In A P'etroleum Filling Station: A Case Study Of Conoil Plc, 25 Aba Road, Umuahia, Abia State . Repository.mouau.edu.ng: Retrieved May 16, 2024, from https://repository.mouau.edu.ng/work/view/a-times-series-analysis-of-monthly-sales-of-petrol-in-a-petroleum-filling-station-a-case-study-of-conoil-plc-25-aba-road-umuahia-abia-state-7-2
BONIFACE, ONYEKWERE. "A Times Series Analysis Of Monthly Sales Of Petrol In A P'etroleum Filling Station: A Case Study Of Conoil Plc, 25 Aba Road, Umuahia, Abia State " Repository.mouau.edu.ng. Repository.mouau.edu.ng, 14 Jul. 2021, https://repository.mouau.edu.ng/work/view/a-times-series-analysis-of-monthly-sales-of-petrol-in-a-petroleum-filling-station-a-case-study-of-conoil-plc-25-aba-road-umuahia-abia-state-7-2. Accessed 16 May. 2024.
BONIFACE, ONYEKWERE. "A Times Series Analysis Of Monthly Sales Of Petrol In A P'etroleum Filling Station: A Case Study Of Conoil Plc, 25 Aba Road, Umuahia, Abia State ". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 14 Jul. 2021. Web. 16 May. 2024. < https://repository.mouau.edu.ng/work/view/a-times-series-analysis-of-monthly-sales-of-petrol-in-a-petroleum-filling-station-a-case-study-of-conoil-plc-25-aba-road-umuahia-abia-state-7-2 >.
BONIFACE, ONYEKWERE. "A Times Series Analysis Of Monthly Sales Of Petrol In A P'etroleum Filling Station: A Case Study Of Conoil Plc, 25 Aba Road, Umuahia, Abia State " Repository.mouau.edu.ng (2021). Accessed 16 May. 2024. https://repository.mouau.edu.ng/work/view/a-times-series-analysis-of-monthly-sales-of-petrol-in-a-petroleum-filling-station-a-case-study-of-conoil-plc-25-aba-road-umuahia-abia-state-7-2