Final answer:
To construct a Pareto diagram for electric stove replacement parts, list parts, and frequencies, order them by frequency, and create a bar chart with a cumulative percentage line graph overlaid. This helps identify which parts are replaced most often and where improvement efforts should be targeted.
Step-by-step explanation:
To construct a Pareto diagram for replacement parts for an electric stove using the provided six-month period data, first list the parts and their respective counts. Pareto diagrams are based on the Pareto principle, which states that, for many events, roughly 80% of the effects come from 20% of the causes. A Pareto diagram is a simple bar chart that ranks related measures in decreasing order of occurrence.
The following are the counts for each part: oven door (193), timer (53), front burners (460), rear burners (290), burner control (135), drawer rollers (46), other (84), and oven regulators (265).
Next, list the parts in descending order of count: front burners, rear burners, oven regulators, oven door, burner control, other, timer, and drawer rollers. Then calculate the cumulative percentage for each part by dividing each part count by the total count and cumulatively adding these percentages.
Create a bar chart with the parts on the x-axis and count on the y-axis with bars representing the counts arranged in descending order. Additionally, a line graph is superimposed on the bar chart representing the cumulative percentage. This Pareto diagram will quickly show which parts are most frequently replaced, indicating where efforts to improve the electric stove should be concentrated.