Bivariate Data Analysis
In this unit you have studied Bivariate Data Analysis with a particular focus on identifying and describing associations between two numerical variables and fitting a linear model to numerical data.
There is a popular belief that young people today spend too much time on devices (for example, mobile phones, computers, iPads) which can be detrimental to the amount and quality of sleep that they get each night. Some studies have even suggested that screen time disrupts sleep by resetting internal clocks. (www.medicalnewstoday.com /articles/323846.php – ACCESSED ONLINE 28/06/2019)
Task
Investigate the possible link between screen time and sleep by focussing on the hours of screen time per day and the hours of sleep that night using data collected from a sample of people who are aged 12-25 over a period of time. The investigation should explore and evaluate the dependence of the quantity of sleep on the total hours of screen time for that day using bivariate data analysis to determine any relationship between these two variables.[unique_solution]
To complete this task you must:
- use different data to other students in your class and school
- respond with a range of understanding and skills, such as using mathematical language, appropriate calculations, tables of data, graphs and diagrams
- provide a response to the context that highlights the real-life application of mathematics
- respond using a written report format that can be read and interpreted independently of the problem solving and modelling task sheet
- develop a unique response
- use both analytic procedures and technology.
You will have 4 weeks to complete this assessment including 3 hours of class time.
General Mathematics — IA1 Page 3 2019 – 2020
Checkpoints
One week after issue date: Students email an assessment plan to the teacher with their individual data.
Two weeks after issue date: Students email evidence of their progress to their teacher.
Three weeks after issue date: Teacher gives general class feedback, no individual corrections.
Four weeks after issue date: Students submit their final response.
Authentication strategies
- You will be provided class time for task completion.
- Your teacher will observe you completing work in class.
- Your teacher will collect copies of your response and monitor at key junctures.
- You must acknowledge all sources.
- You must submit a declaration of authenticity.
- Your teacher will conduct interviews or consultations as you develop the response.
- Your teacher will ensure class cross-marking occurs.
- You will provide documentation of your progress at one week and two weeks after issue date.
Scaffolding
The approach to problem-solving and mathematical modelling must be used.