A,The methods and characteristics of organizing categorical data, numerical data, and ordinal data.
B, the simple method of making a frequency distribution table.
C, the use of EXCELL to produce pivot tables, histograms, pie charts and other chart production methods.
2 , learned in the icon processing of statistics
A, the process of organizing categorical data: 1, list the categories; 2, list the frequency of each category; 3, make a frequency distribution table; 4, display the data in a chart.
B, the process of organizing numerical data focuses on grouping the data and then using statistical tables or graphs to represent the data.
3, Insufficient knowledge of some minor points in the experiment, gradually improve in future experiments. (The frequency polygon in the second question will not operate).