AQA CAU key terms

Question 1

Think of the word

A measurement that is close to the true value is ?..

Answer 1

accurate

Question 2

Think of the word

Results that do not seem to fit the overall pattern or trend.

Answer 2

Anomalies

Question 3

Think of the word

Another word for equipment.

Answer 3

Apparatus

Question 4

Think of the word

Relationships between categoric variables are shown in ?..

Answer 4

bar charts or pie charts

Question 5

Think of the word

This involves marking a scale on a measuring instrument between (at least) 2 known fixed points.

Answer 5

Calibration

Question 6

Think of the word

Variable that are described by labels are ??

Answer 6

categoric

Question 7

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A comparison of the experimental results with the hypothesis.

Answer 7

Conclusion

Question 8

Think of the word

Variables that can have any numerical value are ?..

Answer 8

continuous

Question 9

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These variables must not change during an investigation in order for it to be a fair test.

Answer 9

Control variables

Question 10

Think of the word

Any information that has been collected.

Answer 10

Data

Question 11

Think of the word

The variable which you measure but don?t control. The outcome variable.

Answer 11

Dependent variable

Question 12

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All the apparatus that you will use to carry out the experiment.

Answer 12

Equipment

Question 13

Think of the word

Data that have been shown to be vaild.

Answer 13

Evidence

Question 14

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An experiment in which all variables except one (the indepdendent) has been changed.

Answer 14

Fair test

Question 15

Think of the word

A proposal put forward to explain facts or observations.

Answer 15

Hypothesis

Question 16

Think of the word

This variable is the one that you deliberately change to see what effect it has.

Answer 16

Independent variable

Question 17

Think of the word

6 equally spaced measurements over 100 centimetres would mean there is an ?.. of 20 cm between readings.

Answer 17

Interval

Question 18

Think of the word

Continuous variables are presented on a ?..

Answer 18

line graph

Question 19

Think of the word

The detailed instructions on how to carry out the investigation.

Answer 19

Method

Question 20

Think of the word

is related to the smallest scale division on the measuring instrument that you are using.

Answer 20

Precision

Question 21

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A statement suggesting what will happen, based on a hypothesis.

Answer 21

Prediction

Question 22

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These cause readings to be different from the true value.

Answer 22

Random errors

Question 23

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The maximum and minimum values of a variable.

Answer 23

Range

Question 24

Think of the word

If the original person uses the same equipment and method to repeat the investigation, and obtains the same results, these results are …

Answer 24

Repeatable

Question 25

Think of the word

If another person repeats the investigation using the same or different equipment and obtains the same results, these results are ?

Answer 25

Reproducible

Question 26

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A line/curve that shows the general relationship between two variables. No points are plotted and the axes are labelled but not scaled

Answer 26

Sketch graph

Question 27

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If the same error happens every time a measurement is taken it is a ?.. error.

Answer 27

Systematic

Question 28

Think of the word

Measurements that are all very close to the mean value are called ?

Answer 28

precise

Question 29

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This is the value which would be found in an ideal experiment.

Answer 29

True value

Question 30

Think of the word

A conclusion supported by valid data from an appropriate experiment.

Answer 30

Valid conclusion

Question 31

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The difference between a measured value and the true value.

Answer 31

Measurement error

Question 32

Think of the word

An error caused when a measuring device reads a value but should be reading nothing.

Answer 32

Zero error