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Descriptive Statistics

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Statistical Concepts

Helps educators to understand test-selection criteria, basic principles of measurement, administration techniques, and scoring procedures.

Statistics are a set of tools used for organizing data. Which can be identified as descriptive or inferential. Descriptive is used for summarization of data whereas inferential is used to test theories on a general basis.

To understand statistics better there are methods to gather meaning from numbers. The review of numbers can denote different meanings from different scales.

Numerical scales are broken into four categories

Nominal scale -is used to measure the rank and divide items into various categories.

Ordinal scale- records data without there actually being a differentiation between them.

Interval- is an orderly measurement where two variables are equal.

Ratio- where zero and equal neighboring points are measured.

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Using an ePortfolio

Introduction
ePortfolios are a place to demonstrate your work. They are made of sections and pages. The list of sections are along the left side of the window (show me). Each section can have multiple pages, shown on the right side of the window (show me).
Portfolio Sections

Sections are listed along the left side of the window (show me). Each section can have multiple pages inside of it. To organize or add sections, click the "Organize Sections" link (show me).

You can rename any section by clicking on the icon that appears, rearrange sections by clicking and dragging them, or delete sections by clicking the icon.
Section Pages

Sections have multiple pages. You can see the list of pages for the current section on the right side of the window (show me). To organize or add pages, click the "Organize/Manage Pages" link (show me).

You can rename any page by click on the icon that appears, delete a page by clicking the × icon, or rearrange the order of pages by click and dragging them.
Page Content
The content you see on a page is the same content any visitors will see. To edit this content, click the " Edit This Page" link (show me) and the page will change to editing mode.
Page Content

Now you're editing! Rename the page or change commenting options (show me) if you like. You can save, preview or cancel your changes at any time by clicking the button on the right side (show me).

Content is divided into subsections, which each have a dotted border. You can delete or edit the contents of a subsection by clicking the or icons at the top right corner of the subsection.

To add new subsections, find and click the type of content you want to add in the options list on the right side of the page (show me).
ePortfolio Settings
To change the settings for your ePortfolio, click the "ePortfolio Settings" link (show me). You can rename the portfolio and also change whether it is public or private. Private portfolios are only visible to those to whom you grant access.