Percentage of Canadian Population that is Asleep, by Time of Day
graph by Statistics Canada; slow reveal by Jenna Laib
Type of Graph: area graph
Purpose
This slow reveal is designed to support analysis and discussion of both the data and the design choices. The questions in the slide deck invite learners to examine trends, relationships, and possible interpretations. This graph invites students to the estimate values; discuss variables, piecewise data, and functions; explore percentages; tell a story with data; and identify trends.
About This Graph
This visualization is not provided for reuse or redistribution. Readers and educators are encouraged to view the original visualization in its published context.
Original Visualization:
Statistics Canada. “A Canadian Bedtime Story.” Statistics Canada: March 12, 2026.
Accessed at: https://www.statcan.gc.ca/o1/en/plus/9093-canadian-bedtime-story
Statistics Canada Instagram: https://www.instagram.com/p/DV08ZN5DJfo/?img_index=1&igsh=anRiYnEycnQzYXJ4
Data Source:
Statistics Canada. Table 45-10-0105-01 Participation in selected activities over 24 hours, by type of day, gender, and age group
Accessed at: https://doi.org/10.25318/4510010501-eng
Note: this data set includes information about breakdown by gender, age group, and different activities. Worth checking out for some data science work!

In The Classroom
There are many different mathematical connections that can be made to this data and data visualization.
Potential Math Content: area graph, line graph, functions, piecewise data, identify trends, histograms, percentages, estimating values, noticing trends, variables, surveys, data collection methodology
Potential Content Connections: sleep, Canada, social statistics
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