Hand-size versus Height: a Real-time hands-on activity
Hand-size versus Height: a Real-time hands-on activity
Carl Lee Central Michigan University
Web Site:
Contact: carl.lee@cmich.edu
CAUSE Webinar 11/24, 2009
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Outline of the Presentation
? What/Why using real-time online hands-on activities
? Demonstrate the Hand-size Vs. Height activity:
? Issues related to data production ? Bivariate relationship ? Instructional materials ? Assessment materials
? Benefits and Challenges ? First Time user
CAUSE Webinar 11/24, 2009
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What is a real-time hands-on activity
? It is a hands-on activity ? It collects students' own data ? Data are entered through Internet to the
STATACT site at ? Data are accumulated in an online data base. ? Data are ready for downloading for instructional
use immediately after entry. Navigation of the Real-time site
CAUSE Webinar 11/24, 2009
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Why Real-time data Generated by Students?
This makes it possible to conduct the entire process of statistical investigation in an introductory statistics course.
Report writing, Presentation
Data Analysis
Defining Problem of Interest
Statistical Investigation
Data Cleansing Data manipulation CAUSE Webinar 11/24, 2009
Data Measurement Sampling errors
Data Collection
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Activity: How well can hand-size predict height?
The learning goals: By the end of the activity, students are expected to be able to:
? Explain the importance of data measurement and production in a given context, and choose a measurement that is more robust to the environment.
? Apply graphical and numerical techniques to describe and interpret the relationship between two variables.
? Explain the least square method in a given context. ? Distinguish between causation and association. ? Apply residual plots to determine if linear model is appropriate. ? Identify outlying cases and determine their effects.
CAUSE Webinar 11/24, 2009
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