When doing a survey of students at the school between 1-5 4. About 20 rooms, a series about 10 articles, and then bring the data to find the average of the conceptions that 4. Create a graph or chart.
When you make the Mathayom 4 Student Survey during the 1-5, 20, 10, set by the unit of the information and then come to the average level of the graph or chart 4.