Finding patterns in data sets

A mood tracking app decides to help users understand their mood changes better by also tracking the hours they spend on other applications.

This chart visualizes the results for a video watching app, using a scatter plot to compare each user's hours spent in the app to their mood after exiting the app:

Users rate their mood from 1-10, where 1 is least happy and 10 is most happy. The

green dots

represent users that reported using the app primarily for educational videos, and the

purple dots

represent users that reported using it primarily for amusing videos.

Which hypothesis is most consistent with the chart?

(Choice A)
Users who watch educational videos always feel more happy than users who watch amusing videos.
(Choice B)
All users of the video watching app experienced a significant mood decline with increased hours in the app.
(Choice C)
Users who watch amusing videos generally feel less happy the more they watch.
(Choice D)
Users who watch educational videos are more likely to feel happy if they watch the videos for longer amounts of time.

AP®︎/College Computer Science Principles

Course: AP®︎/College Computer Science Principles > Unit 5

Problem