A plastic manufacturing company intends to create a control chart for the upcoming period by conducting inspections on the production process this month. The company conducts $25$ observations, each involving the sampling of $50$ pieces. The data on the number of defects can be seen in the adjacent table. Based on this data, with a constant sample size, determine and create a Control Chart that is appropriate for these conditions. Then, explain whether, based on the control chart, revisions are necessary or not for the upcoming period.