Now its very easy to insert a Google Visualization chart inside your WordPress blog posts and pages simply by clicking a button and typing values in WordPress TinyMCE visual editor.
First install and activate the new WordPress plugin called Iced Visualization Chart. After activation visit your admin area Dashboard and create a new post or page, you will notice a new pie icon is added in your WordPress visual editor.
Click the pie icon -> Type the number of values you are planning to insert in your pie chart and it instantly displays the text boxes where you can enter your value names and data.
After you finish entering your values click the Insert Chart button. Now publish your post/page and see how it looks.