# AP Statistics Curriculum 2007 EDA Shape

(Difference between revisions)
 Revision as of 01:04, 28 January 2008 (view source)IvoDinov (Talk | contribs) (→Activities)← Older edit Revision as of 01:08, 28 January 2008 (view source)IvoDinov (Talk | contribs) Newer edit → Line 22: Line 22: *The amount of time spent by students on a difficult exam. *The amount of time spent by students on a difficult exam. *The grade distribution on a difficult exam. *The grade distribution on a difficult exam. - - ===Model Validation=== - Checking/affirming underlying assumptions. - - * TBD - - ===Computational Resources: Internet-based SOCR Tools=== - * TBD - - ===Examples=== - Computer simulations and real observed data. - - * TBD ===Hands-on activities=== ===Hands-on activities=== - Step-by-step practice problems. + * [[SOCR_EduMaterials_Activities_RNG | You can generate data using the SOCR Modeler as shown here]]. - + * [[SOCR_EduMaterials_ModelerActivities_MixtureModel_1 | Try fitting multi-model mixture models to samples of 2 Normal distributions with very different centers]] - * TBD + - + -
+ - ===References=== + - * TBD +

## General Advance-Placement (AP) Statistics Curriculum - Measures of Shape

### Definitions

• A distribution is unimodal if it has one mode. Unimodal distributions include:
• Bell shaped distributions (symmetric, Normal)
• Skewed right
• Skewed Left
• Multimodal distributions have two or more than one modes. Examples of multimodal distributions are:

### Examples

What seems like a logical choice for the shape of the hot dog calorie data? Try looking at the histogram of the calories for the Hot-dogs dataset.

### Activities

Collect data, draw the sample histogram or dot-plot and classify the shape of the distribution accordingly. Also, if unimodal, classify symmetry (symmetric, skewed right or skewed left).

• Data collected on height of randomly sampled college students.
• Data collected on height of randomly sampled female college students.
• The salaries of all persons employed by a large university.
• The amount of time spent by students on a difficult exam.
• The grade distribution on a difficult exam.