為了瞭解來自電腦或手機等裝置的使用者人數，你製作了一份報表，列出過去 30 天各裝置類型的人數資料。在這份報表中，裝置類型是什麼？

In Google Analytics, a dimension is an attribute of your data that describes characteristics of your users, their sessions, or their actions. In this scenario, "device type" (e.g., desktop, mobile, tablet) is a characteristic that describes your users, making it a dimension. You're segmenting your user count by this characteristic. Metrics are quantitative measurements (e.g., number of users, sessions, bounce rate). Events are specific user interactions you track (e.g., button clicks, video plays). Users refer to the individuals interacting with your website or app, but "device type" is a way to categorize those users, not the users themselves.