First, the sorting methods and characteristics of classified data, numerical data and sequential data.
A simple method of making frequency distribution table.
Make charts such as pivot table, histogram and pie chart with EXCELL.
I learned it from icon processing in statistics.
A, sorting process of classified data: 1, listing categories; 2. List the frequency of each category; 3, making a frequency distribution table; 4. Display the data in a chart.
B, the process of sorting numerical data focuses on grouping the data and representing the data with statistical tables or charts.
3, the understanding of some small knowledge points in the experiment is insufficient, which will be gradually improved in future experiments. The frequency polygon in the second question cannot be operated.