問25
頻出度★★★
a～d のうち, 業務プロセスの改善に当たり, 業務プロセスを表記するために用いられる図表だけを全て挙げたものはどれか。 a DFD b アクティビティ図 c パレート図 d レーダチャート
令和4年度 ITパスポート試験 問25
ストラテジ系システム戦略 › 業務プロセス
This question's explanation and your answers so far.
解説
問 25
- ア
正解 What is used to represent the business process itself (the flow and steps of work) as a diagram are a, the DFD, and b, the activity diagram. A DFD (Data Flow Diagram) depicts, as a “flow of data,” where data moves from and to within a business and which processes it passes through, and it is used to visualize and analyze business processes. An activity diagram is one of the UML diagrams; it connects the order, branching, and parallelism of work (activities) with arrows to represent the flow of a procedure. Since both are diagrams that notate the “flow of a process,” the answer is choice ア (a, b), which lists only a and b.
Incorrectイ
Although a, the DFD, is correct, this choice is wrong because it includes c, the Pareto chart. A Pareto chart is a QC method that arranges items as a bar chart in descending order of count and overlays a line of cumulative percentage to analyze “which problem is the biggest (the target to be managed with priority)”; it is not a diagram that notates the flow of a business process itself.
Incorrectウ
Although b, the activity diagram, is correct, this choice is wrong because it includes d, the radar chart. A radar chart takes multiple evaluation items as radial axes and connects the values to compare the overall balance and the strengths and weaknesses; it does not represent the flow of a process. In addition, the correct item a (DFD) is missing.
Incorrectエ
Both c, the Pareto chart (for priority analysis), and d, the radar chart (for comparing the balance of multiple items), are graphs that present data by analyzing and comparing it; neither is a diagram that notates the flow of a business process. Since neither a nor b, which are used to notate processes, is included, this choice is wrong.
ここがポイント
- The representative diagrams that notate a business process (its flow and steps) are the DFD (flow of data) and the activity diagram (order, branching, and parallelism of work).
- Distinguish the difference in purpose: a Pareto chart (priority analysis) and a radar chart (comparing the balance of multiple items) are “graphs for analyzing and comparing data,” not diagrams that represent the flow of a process.
用語