Exercise

iPhone sales and eBay sales

Annual Apple iPhone sales are highly correlated with annual eBay sales. If this relationship is spurious (misleading and false), what might be causing this high correlation?

Instructions

50 XP

Possible Answers

Most transactions on eBay are for Apple iPhones.
Time causes technology sales and technology usage to increase
Most people only shop on eBay using the iPhone's eBay app.
Buying an iPhone makes people more comfortable with using technology for market transactions.