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# Investigation skills assessment

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AQA, ISA Investigation skills assessment definitions.

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### Investigation skills assessment

1. 1. Investigation skills assessment (ISA)terms <ul><li>Look at the definition of the word that applies to an investigation skills assessment (ISA) then click on the number in the white box next to the word to check your answer: </li></ul><ul><li>Return to the questions then click on the large yellow box for the next definition. </li></ul><ul><li>You need to download this so that it will work on PowerPoint. </li></ul>
2. 2. <ul><li>This is the variable that we change (or choose) in our investigation. We plot it on the x-axis of a graph. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
4. 4. <ul><li>This is the variable could affect our result but does not because we have kept it the same in all our experiments. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
6. 6. <ul><li>This is the variable that we measure each time we change the independent variable. It is the result of our experiment. We plot it on the y-axis of a graph. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
8. 8. <ul><li>This is the variable that is one best described by a label (usually a word). Example- eye colour is blue or brown. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
10. 10. <ul><li>These variables can only have whole numbers. Example - The number of leaves on a plant. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
12. 12. <ul><li>A variable which can be measured and can have any numerical value. Example temperature 37.6°C and 45.2°C </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
14. 14. <ul><li>These variables can be ranked (put into order) e.g. large, medium or small. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
16. 16. <ul><li>The word that indicates your results and the repeats are very close together. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
17. 17. Correct answer <ul><li>Well done </li></ul>
18. 18. <ul><li>The word for a marking or scale on a measuring instrument </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
19. 19. Correct answer <ul><li>Well done </li></ul>
20. 20. <ul><li>Word for data which has been checked so it can be judged whether reliable or not. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
21. 21. Correct answer <ul><li>Well done </li></ul>
22. 22. <ul><li>Word for your measurements; the results of your experiments </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
23. 23. Correct answer <ul><li>Well done </li></ul>
24. 24. <ul><li>Error which affects all of your results. You cannot compensate for them by taking an average of lots of readings. Your results will be inaccurate and will not be the same as the true value. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
25. 25. Correct answer <ul><li>Well done </li></ul>
26. 26. <ul><li>Word for a measurement is one in which the mean (average) of repeated readings is close to what we know is the true value. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
27. 27. Correct answer <ul><li>Well done </li></ul>
28. 28. <ul><li>Your results can be described by this word if you are measuring the actual thing you want to measure AND your results are accurate. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
29. 29. Correct answer <ul><li>Well done </li></ul>
30. 30. <ul><li>Errors which causes your readings to be spread about the true value. We can compensate for these errors by taking a large number of readings and find the mean (average) of them. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
31. 31. Correct answer <ul><li>Well done </li></ul>
32. 32. <ul><li>Your results can be described using this word because other people get the same results as you. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
33. 33. Correct answer <ul><li>Well done </li></ul>
34. 34. <ul><li>Describes a series of experiments in which all the variables have been controlled except the variable that is being tested. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
35. 35. Correct answer <ul><li>Well done </li></ul>
36. 36. <ul><li>Error caused by measuring instruments that have a false zero. It may affect all your results. It makes your results inaccurate. </li></ul>Continuous variable Systematic error Categoric variable Reliable Independent variable Evidence Valid Control variable Discrete variable Calibration Zero error Dependent variable Random error Accurate Ordered variable Fair test Precise Data 8 9 7 16 17 18 6 5 14 15 4 13 3 12 11 10 2 1
37. 37. Correct answer <ul><li>Well done – that is the end of the quiz </li></ul>