This course explores the principles and practices of effective data communication, emphasizing clarity, accuracy, and audience-tailored design. Students will gain hands-on experience with common visualization software while learning to critique and select appropriate visualization techniques for different datasets. The course will also focus on applying ethical standards in data representation and on storytelling techniques to present data in coherent narratives. By the end of the course, students will be equipped to create impactful visualizations and to communicate data clearly and responsibly in professional settings.