RESTAURANT XYZ PEAK HOUR WAITING TIME REDUCTION USING SIX SIGMA ANALYSIS

  • Evita Meiliana Institut Teknologi Bandung (ITB)
Keywords: Customer Waiting Time, Waiting Time Reduction, Ordering Process, Restaurant Ordering Process, Six Sigma

Abstract

This research analyzes the long waiting time experienced by customers of Restaurant XYZ during peak hours (Saturday-Sunday, 12:00PM-14:00PM and 17:00PM-19:00PM). The objective of this research is to find out the factors or root causes that contribute to the long waiting time. Apart from that, other objectives are also to identify, implement and evaluate effective strategies that can be used as a solution to optimize the ordering process system so that it can reduce the long waiting time experienced by XYZ Restaurant customers. Waiting time in this research is aimed at when customers queue to order food and beverage until the customer gets their food. The current waiting time that customers experience is 34 minutes. Meanwhile, Restaurant XYZ has a goal of reducing waiting time to 25 minutes. This target is determined by consideration of the customer and restaurant. To analyze, this research uses a combination of qualitative and quantitative approaches. The quantitative method will be used to collect data of ordering and queuing time directly through observation. Meanwhile the qualitative method will be used to collect the perceptions, experiences, and expectations of the company and customers through interviews. The qualitative data will be used as the benchmark and basis of the research analysis. With this approach, research will also adopt the DMAIC (Define, Measure, Analyze, Improve, Control) framework to identify problems, measure data, analyze data, generate solutions, and prepare control plans to maintain improvement. Overall, this research suggests changing the ordering system from Restaurant XYZ to a digital ordering system using a website which will reduce waiting time because the queue will change from physical to digital. Apart from that, this research also proposes some changes to integrate solutions and monitoring plans.

References

Alin, A. (2010). Minitab. WIREs Computational Statistics, 2(6), 723–727. https://doi.org/10.1002/wics.113
Ambareni, R. F. (2015). Evaluation Queuing System in the Peak Hours Using DMAIC Analysis: Study Case Ayam Geprek Bebas Restaurant Dipatiukur, Bandung. https://digilib.itb.ac.id/gdl/view/30204/ayam-geprek-bebas?rows=42&per_page=2&fid=9
Berarddinelli, C. F. (n.d.). To DMAIC or Not to DMAIC?, 45. https://www.proquest.com/openview/b3c577516acae1f7cc96dee05d30c023/1?pq-origsite=gscholar&cbl=34671
Bose, S. K. (2002). An Introduction to Queuing Systems. Kluwer academic.
da Costa, J. M. H., Amaral, C. S. T., Fernandes, S. d. C., & Rozenfeld, H. (2019). A new way to diagnose the new product development process based on recurring current reality trees. Business Process Management Journal, 25(4), 667–687. https://doi.org/10.1108/BPMJ-01-2017-0020
Dewi, A. M. (2022). Kondisi Industri Pengolahan Makanan dan Minuman di Indonesia. Kementerian Keuangan Republik Indonesia. https://www.djkn.kemenkeu.go.id/kanwil-suluttenggomalut/baca-artikel/15588/Kondisi-Industri-Pengolahan-Makanan-dan-Minuman-di-Indonesia.html
Factory. (n.d.). Process Capability Analysis Cp, Cpk, Pp, Ppk - A Guide. https://www.1factory.com/quality-academy/guide-to-process-capability-analysis-cp-cpk-pp-ppk.html#:~:text=What%20is%20Process%20Capability%20Analysis,being%20similar%20to%20a%20forecast.
Gianto, C. (2020). Reducing Waste in Coated Kraft Paper Production at CV. MXX by Adopting Lean Operation Method. https://digilib.itb.ac.id/gdl/view/72940/claresta?rows=2&per_page=3&fid=9
Hessing, T. (n.d.). I-MR Chart. https://sixsigmastudyguide.com/i-mr-chart/#:~:text=The%20I%2DMR%20chart%20was,over%20a%20period%20of%20time.
Hopper, E. (2024). Maslow's Hierarchy of Needs Explained. https://www.thoughtco.com/maslows-hierarchy-of-needs-4582571
Kumar, P. (2024). What is Six Sigma: Everything You Need to Know About It. https://www.simplilearn.com/what-is-six-sigma-a-complete-overview-article#:~:text=Six%20Sigma%20is%20a%20set,3.4%20defects%20per%20million%20opportunities.
Kumar, R. (2020). Modeling and Simulation Concepts: Queuing System. Laxmi Publications Private Limited. https://www.researchgate.net/publication/346721926_Book_Chapter_-_QUEUEING_SYSTEM
Labxchange. (2021). How to Interpret Histograms. https://www.labxchange.org/library/items/lb:LabXchange:10d3270e:html:1
Maister, D. (1985). The Psychology of Waiting Lines. Lexington Books.
Miah, A. Q. (2016). Applied Statistics for Social and Management Sciences. Springer Singapore. https://www.springerprofessional.de/applied-statistics-for-social-and-management-sciences/7498830
Minitab. (n.d.–a). Specify a transformation for a Normal Capability Sixpack. https://support.minitab.com/en-us/minitab/help-and-how-to/quality-and-process-improvement/capability-analysis/how-to/capability-sixpack/normal-capability-sixpack/perform-the-analysis/specify-a-transformation/
Minitab. (n.d.–b). Weibull distribution. https://support.minitab.com/en-us/minitab/help-and-how-to/probability-distributions-random-data-and-resampling-analyses/supporting-topics/distributions/weibull-distribution/
Minitab Blog Editor. (n.d.). Why the Weibull Distribution Is Always Welcome. https://blog.minitab.com/en/understanding-statistics/why-the-weibull-distribution-is-always-welcome
Mishra, P., Pandey, C. M., Singh, U., Gupta, A., Sahu, C., & Keshri, A. (2019). Descriptive Statistics and Normality Tests for Statistical Data. Annals of Cardiac Anaesthesia, 22(1), 67–72. https://doi.org/10.4103/aca.ACA_157_18
Monday, L. M. (2022). Define, Measure, Analyze, Improve, Control (DMAIC) Methodology as a Roadmap in Quality Improvement. Global Journal on Quality and Safety in Healthcare, 5(2), 44–46. https://doi.org/10.36401/JQSH-22-X2
Montgomery, D. C. (2009). Introduction to Statistical Quality Control (6th ed.). John Wiley & Sons.
OriginLab. (n.d.). Weibull Probability Plot. https://www.originlab.com/doc/Tutorials/Weibull-Probability-Plot#:~:text=The%20probability%20plot%20shows%20a,and%20Double%20Log%20Reciprocal%20respectively.
Sagbas, A. (2008). Improving The Process Capability of a Turning Operation by The Application of Statistical Techniques. http://mit.imt.si/izvodi/mit091/sagbas.pdf
Salawu, G., Bright, G., & Onunka, C. (2020). Performance Optimization on Waiting Time using Queuing Theory in an Advanced manufacturing Environment. https://scielo.org.za/pdf/sajie/v31n4/03.pdf
Santika, E. F. (2023). Industri Besar-Sedang Indonesia Dikuasai Perusahaan Makanan pada 2021. Databoks. https://databoks.katadata.co.id/datapublish/2023/10/02/industri-besar-sedang-indonesia-dikuasai-perusahaan-makanan-pada-2021
Serrat, O. (2016). The SCAMPER Technique. In O. Serrat (Ed.), Knowledge solutions (pp. 311–314). Springer Berlin Heidelberg. https://doi.org/10.1007/978-981-10-0983-9_33
Shankar, R. (2009). Process Improvement Using Six Sigma: A DMAIC Guide. American Society for Quality. https://www.google.co.id/books/edition/Process_Improvement_Using_Six_Sigma/pJFeNy9Z74IC?hl=en&gbpv=1&dq=The+DMAIC+Handbook+-+Everything+You+Need+To+Know+About+DMAIC&printsec=frontcover%20(udh%20di%20download,%20process%20improvement%20using%20six%20sigma)
Simons, J. A., Irwin, D. B., & Drinnien, B. A. (1987). Maslow's Hierarchy of Needs: From Psychology - The Search for Understanding. http://eznow7jgmenpjz.pic3.eznetonline.com/upload/MASLOW_YQfG.pdf
Srivastava, T. (2024). Queuing theory Definition, Applications and Examples. Analytics Vidhya. https://www.analyticsvidhya.com/blog/2016/04/predict-waiting-time-queuing-theory/
Trendable by Argolystics. (n.d.). What are USL & LSL limits in TRENDABLE? https://www.gotrendable.com/what-are-usl-lsl-limits/#:~:text=USL%20%3D%20Upper%20Specification%20Limit,the%20next%20department%20in%20line).
Vivekananthamoorthy, N., & Shanmuganathan, S. (2011). Lean Six Sigma. https://www.researchgate.net/publication/215576248_Lean_Six_Sigma
White, S. A. (2004). Introduction to BPMN. IBM Corporation. http://yoann.nogues.free.fr/IMG/pdf/07-04_WP_Intro_to_BPMN_-_White-2.pdf
The World Bank. (n.d.). Indonesia. https://data.worldbank.org/country/indonesia?view=chart
Published
2024-07-04
How to Cite
Evita Meiliana. (2024). RESTAURANT XYZ PEAK HOUR WAITING TIME REDUCTION USING SIX SIGMA ANALYSIS. Journal of Social and Economics Research, 6(1), 777-791. https://doi.org/10.54783/jser.v6i1.452