2uData ⮞Data Description ⮞Tables

Tables

In statistics, table can be used for several purposes : to store raw data, to show synthesized data, to contain intermediate values between calculation. In this page, we examine tables for raw data.

This table consists of rows and columns. Each column is reserved for one variable, and each row, for an element of investigated set. In general, the first row, header row, is reserved for the names (labels) of variables and the first column is reserved for the names or codes of elements. So if we exclude the first row and first column of the list table, the cell at column `j` and row `i` is the value `x_(ij)` of variable `j` for element `i` (Table 1).

Table 1 Structure of table for raw data

	Variable 1	Variable 2	. . .	Variable `j`	. . .
Element 1	`x_(11)`	`x_(12)`	. . .	`x_(1j)`	. . .
Element 2	`x_(21)`	`x_(22)`	. . .	`x_(2j)`	. . .
. . .	. . .	. . .	. . .	. . .	. . .
Element `i`	`x_(i1)`	`x_(i2)`	. . .	`x_(ij)`	. . .
. . .	. . .	. . .	. . .	. . .	. . .

Example 1 : Table 2 is a part of result of quality control of meat product in a factory.

Table 2 Result of quality control of canned meat of factory X

Sample	Weight (g)	Liquid (%)	pH	E. coli
0814091	252,3	15,6	6,0	ND
0814092	251,4	15,8	6,0	ND
0814093	251,8	16,2	6,1	ND
0814101	252,1	15,2	6,0	ND
0814102	251,3	14,5	5,9	ND
0814103	252,0	16,2	6,0	ND
0814104	251,6	16,1	6,1	ND
0814111	251,1	16,4	6,1	ND
0814112	252,8	15,8	6,0	ND
0814113	251,5	16,0	5,9	ND

ND : not detect.