Induction of Simple Statistical Knowledge Points in Xiaoshengchu Mathematics

Simple statistics

statistics

(1) Importance

* Fill in statistical data in a certain format to reflect the situation and explain the problem. Such a table is called a statistical table.

(ii) Components

* generally divided into two parts: off-balance sheet and on-balance sheet. The format part includes target name, unit description and tabulation date; Tables include titles, horizontal titles, vertical titles and data.

(3) type

* Single statistical table: a statistical table containing only one item.

* Composite statistical table: a statistical table containing two or more statistical items.

* Percentage statistics table: it shows not only the specific quantity of each statistical item, but also the percentage of the comparative quantity equivalent to the standard quantity.

(4) manufacturing step

1 Collect data

2 Organization data:

Data should be classified according to the purpose of tabulation and the content of statistics.

3 design sketch:

According to the purpose and content of statistics, the content and drawing method of column grid are designed, and the horizontal and vertical columns are divided into several grids, and the length of each grid is specified.

4 formal tabulation:

Fill in the checked data in the table, and write the name and tabulation date of the statistical table in simple and clear language according to the tabulation requirements.

Junior high school entrance examination is an important examination for primary school students to enter key junior high schools. I hope everyone will review carefully, and I also hope that the simple statistical knowledge points of junior high school mathematics we have prepared can help everyone in the process of preparing for the exam in junior high school!

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