| Question |
Answer |
| DATA | Collection of readings or measurements |
| DATUM | The singular word for data |
| TRUE VALUE | This is the reading that would be obtained if there were no errors at all |
| ACCURACY | This is when a measurement is close to the true value |
| PRECISION | This depends on the scale of your measuring instrument. A precise instrument has lots of decimal places or many divisions in its scale. |
| RELIABLE | This is when the repeated results are the same even when someone else carries out the same experiment |
| FAIR TEST | This is when only one variable (independent) has been allowed to affect the results (dependent variable) |
| VALID | Data is not valid if a fair test is not carried out. Only valid data can be used to draw conclusions |
| EVIDENCE | This is when you have valid data |
| CALIBRATION | This is the scale between fixed points on a measuring instrument |
| RANDOM ERROR | These cause readings to be different from the true value. These can be detected by taking a large number of readings. |
| SYSTEMATIC ERROR | This is when the repeated readings are either mostly above or mostly below the true value |
| ZERO ERROR | These are caused when the measuring instruments do not read zero correctly.This is a type of systematic error |
| INDEPENDENT | This is the variable that you choose to change the value of. Usually plotted on the x-axis of a graph |
| DEPENDENT | This is the variable that you measure when you change the independent variable. Usually plotted on the y-axis of a graph |
| CONTINUOUS | A variable that can be any number and can go up in any interval. Data is presented in a line/scatter graph |
| CONTROL | This is when more than one variable could affect the results. The control variable is the one that must be kept constant or closely monitored |
| DISCRETE | A variable whose values are only whole numbers |
| CATEGORIC | A variable that has names rather than numbers. Data is presented in a bar or pie chart |
| ORDERED | These are categoric variables that can be ordered eg large, medium or small |
Cardio Block2anatomy
