Tabulating Data
- Created by: Aliza12
- Created on: 11-10-19 10:12
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- Tabulating Data
- Importance
- It is important to keep a record of data while carrying out practical work.
- Tables
- should have clear headings with units indicated using a forward slash (solidus) before the unit.
- It is good to draw tables before an experiment commences and then enter data straight into the table on collection.
- This can sometimes lead to data points being in the wrong order. For example, when investigating the temperature at which an enzyme works best, a student may do a number of experiments at 25, 30, 35, 40 and 45°C, and then investigate the range between 30 and 40 further by adding readings at 31, 32, 33, 34, 36, 37, 38 and 39°C.
- it is generally a good idea to make a fair copy of the table in ascending order of temperature to enable patterns to be spotted more easily.
- Reordered tables should follow the original data if using a lab book.
- The body of the table should not contain units.
- Variables
- the independent variable is the left hand column in a table, with the following columns showing the dependent variables.
- Logarithmic values
- When the logarithm is taken of a physical quantity, the resulting value has no unit
- it is important to be clear about which unit the quantity had to start with
- logarithm of a distance in km will be very different from the logarithm of the same distance in mm.
- Importance
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