1.4.1 Tabulation method
In data recording and processing,experimental data is often tabulated.Tabulation is an effective method to record experimental data in sequence and also a clear way to show various relationships between data as well,which is beneficial to find out and analyze problems just to avoiding mistakes.
Requirements of tabulation are listed as follows:
(1)Tabulation must be simple and clear for finding out the relationship between related quantities and processing data.In addition,the title must be shown.
(2)In the tabulation,the meaning of symbol standing for physical quantity must be marked clearly as well as its unit.The unit and the order of magnitude of each quantity should be given in the title bar once and for all.
(3)The data must correctly reflect the accuracy of the instrument,requiring the significant figures to be precise.When scientific notation is required,the involution of“10”should be put in the title bar,and the decimal points have to be aligned.(https://www.daowen.com)
(4)Necessary instructions should be concise and accurate.
For example,in Table 1.4.1,a group of measured data of cylinder diameter D using a vernier scale caliper(0.05 mm)and the corresponding processed data are listed.It can be seen from the table that the sum of deviation is zero(or closed to zero),indicating to the correct calculation.
Table 1.4.1 Table of measured and processed data of cylinder diameter D
