Spotify recently saw a surge in the number of individuals st…
Spotify recently saw a surge in the number of individuals streaming music using its service. Spotify assumes that this increase in usage is due to a new billboard that Spotify revealed in Times Square. The marketing department is excited to create more similar advertisements even though they are very expensive because, obviously, the ad worked. What is the problem with the marketing department’s thinking? Please describe at least one other event that could have caused this increase in music listening. What is this type of variable called?