Westonci.ca is the ultimate Q&A platform, offering detailed and reliable answers from a knowledgeable community. Our platform connects you with professionals ready to provide precise answers to all your questions in various areas of expertise. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform.

Walt is conducting an observational study on cell phone use in public places so he records how long participants spend on their cell phones. In other words, he's measuring ______.