データセットにこのデータが含まれている場合は、Looker Studio で結果を表示できます。しかし、修了率をレポート内で計算したり、フィルタされたデータに基づいて修了率を表示したりすることが必要になった場合は、どうすればよいでしょうか。このような場合には、データの統合機能を使用すれば解決できます。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-03 UTC。"],[],[],null,["# Tutorial: Create a ratio field based on filtered metrics\n\nA common use case in reporting and data visualization is to display key performance indicators (KPI) as ratios of one indicator as compared to another. For example, suppose you are measuring the completion rate of an online coding academy. A KPI for the course is completion rate, which we'll define here as:\n\n`Course completions / Course registrations`\n\nIf your dataset already contains this data then you can display the result in Looker Studio. But what if you need to calculate it in your report, or need to display completion rates based on filtered data? The solution is to use data blending.\n\nSay your data looks like this:\n\nStep 1: Calculate the course completions\n----------------------------------------\n\n1. Add a scorecard to your report. Call it **Course Completions**.\n2. Set the metric to *Unique Events*.\n3. Add a filter to the scorecard to ignore non-completion events:\n\n `Include`**`Event Category`** `= \"Course Complete\"`\n\n `AND`\n\n `Include`**`Event Action`** `= \"Pass\"`\n\nBased on the sample data, the scorecard would look like this:\n\nStep 2: Calculate the course registrations\n------------------------------------------\n\n1. Add a scorecard to your report. Call it **Course Registrations**.\n2. Set the metric to *Unique Events*.\n3. Add a filter to the scorecard to ignore non-registration events:\n\n `Include`**`Event Category`** `= \"Registration\"`\n\n `AND`\n\n `Include`**`Event Action`** `= \"Register\"`\n\nBased on the sample data, the scorecard would look like this:\n\nStep 3: Blend the data from the scorecards\n------------------------------------------\n\n1. Select the *Course Registrations* scorecard, then select the *Course Completions* scorecard.\n2. Right-click, then select **Blend data**.\n\nThis creates a new scorecard that automatically calculates the ratio between those metrics:\n\n| **Tip:**\n|\n| To create more complex calculated fields or change the number display:\n|\n| 1. Select the blended scorecard.\n| 2. Edit the metric.\n| 3. Enter a new formula and/or change the field **Type** to match the data.\n|\nRelated resources\n-----------------\n\nLearn more about how blending works:\n\n- [About data blending](/looker/docs/studio/how-blends-work-in-looker-studio)\n- [Use blending to re-aggregate data](/looker/docs/studio/use-blending-to-reaggregate-data)"]]
