Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| DATA | Collection of readings or measurements
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| DATUM | The singular word for data
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| TRUE VALUE | This is the reading that would be obtained if there were no errors at all
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| ACCURACY | This is when a measurement is close to the true value
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| PRECISION | This depends on the scale of your measuring instrument. A precise instrument has lots of decimal places or many divisions in its scale.
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| RELIABLE | This is when the repeated results are the same even when someone else carries out the same experiment
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| FAIR TEST | This is when only one variable (independent) has been allowed to affect the results (dependent variable)
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| VALID | Data is not valid if a fair test is not carried out. Only valid data can be used to draw conclusions
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| EVIDENCE | This is when you have valid data
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| CALIBRATION | This is the scale between fixed points on a measuring instrument
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| RANDOM ERROR | These cause readings to be different from the true value. These can be detected by taking a large number of readings.
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| SYSTEMATIC ERROR | This is when the repeated readings are either mostly above or mostly below the true value
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| ZERO ERROR | These are caused when the measuring instruments do not read zero correctly.This is a type of systematic error
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| INDEPENDENT | This is the variable that you choose to change the value of. Usually plotted on the x-axis of a graph
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| DEPENDENT | This is the variable that you measure when you change the independent variable. Usually plotted on the y-axis of a graph
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| CONTINUOUS | A variable that can be any number and can go up in any interval. Data is presented in a line/scatter graph
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| 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
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| DISCRETE | A variable whose values are only whole numbers
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| CATEGORIC | A variable that has names rather than numbers. Data is presented in a bar or pie chart
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| ORDERED | These are categoric variables that can be ordered eg large, medium or small
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
kmatcher
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