วันศุกร์ที่ 27 มกราคม พ.ศ. 2555

Chapter 9 Evaluation


 A good website is simply a site that provides it’s target market with what they desire.

Characteristics of good websites

1. Easy to Read -Don’t make it hard for your visitors to read the information they’re looking for. Use a font that is large and easy to read. Also don’t make the background of your writing dark and your actual writing light. For example white text on a black background is terrible for reading, so are bright reds, pinks, greens, etc. Don’t mess with this or you’ll lose readers. Keep your text black on a white background for the easiest readability.

2. Easy to Find – Don’t hide the good stuff. Make sure your website navigation makes sense and makes it easy for your visitors to find what they need. It’s best not to have a huge selection on the main  page of your website. When faced with too many decisions people usually choose none. Make main categories and then drill down to deeper pages if you need to.

3. Lead Them Through – Don’t expect your visitors to find their way through your site. Take every opportunity you can to lead them through and show them the way.

4. Provide Basics – The basic pages most websites will need are a ‘Home’, ‘About’, ‘Contact’ and ‘FAQ’ page. Most people expect these pages on a website. Provide them.

5. Have a Clear Purpose – Do people know what your website is about when they hit the main page? Is the purpose clear? Make sure your visitors know what your website is about and how it can help them. Don’t make them search for this information or they might end up going somewhere else.

6. Offer Solutions – Are people coming to your website with a problem? Don’t just offer information, make sure to offer solutions. If you are providing information be sure to lead them towards the next step. This will help connect your visitors to what you want and allow you to make more money.

7. Test, Track and Tweak – No website is perfect in the first go. Think of your website as a brand new baby and stay by it’s side as it learns to talk, to walk, to ride it’s bike.  Make sure you pay attention to your website and watch as it grows and you’ll be amazed at how intuitively you will be able to make decisions as time goes by.



Examples of good websites




Bias Information
  Information bias is a bias deriving from imperfect definitions of study variables or from flawed data collection. We have 2 types of information bias. Exposure identification bias and outcome identification bias. We will go into detail. Starting with exposure identification bias. Let’s make the example about the association between nephrotic syndrome and hydrocarbon exposure. Now it’s quite possible that if we try to understand the exposure status by asking patients, asking cases, cases are very concerned by their health status and they maybe more likely to recall exposure.
 
1.Diffrential misclassification
2.Non-diffrential misclassification
3.Subject despondence bias

Examples



        

 

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