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BTEC
BTEC APPLIED SCIENCE UNIT 3 EXAM
QUESTIONS AND ANSWERS UPDATED
(2024/2025) (VERIFIED ANSWERS)
What is the control variable? - ANS ✓The variables you keep constant during
an investigation.
What should a method be? - ANS ✓A step-by-step set of instructions, Be
logically ordered, allows you to take sensible measurements, and allows you to
test your hypothesis.
When planning your method what do you need to make sure? - ANS ✓That it
will procedure a range of results, reliable results, precise results, and accurate
results.
What are some types of data? - ANS ✓The data can be continuous such as the
age of plant ir number of plants. Some data can be a mixture of numbers and
names such as the number of different types of plants found in a garden.
What data is normally displayed on a bar chart? - ANS ✓Continuous data. You
need to make sure its a smooth curve of best fit, and that the curve goes through
or near most of the points.
What are bar charts used for? - ANS ✓They are used for discrete data but can
be used to compare different sets of data.
What is the trend on a graph? - ANS ✓The relationship between factors on the
graph or in the table. The full trend is that the volume increases as the time
increases but then levels off after a certain amount of time.
BTEC APPLIED
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BTEC
What is the sample size? - ANS ✓The number of people sampled in the
investigation. To be confident in your conclusions you need a large sample size to
give strong evidence.
What is Primary data? - ANS ✓This is the data that you have gathered for
yourself through the experiments or investigations .
What is secondary data? - ANS ✓The data that you get in books, scientific
papers or the internet. You should compare your primary and secondary data to
draw a conclusion
How do you know if the data is anomalous? - ANS ✓It doesn't fit into the
pattern of the other results. It does not lie close to the line of best fit.
What can cause the anomalous data? - ANS ✓Not following the method
correctly. inaccurate measuring/recording and impurities.
What is systemic error? - ANS ✓The error that is built into the method or
equipment which you are using. This can be corrected by calibrating the balance.
These errors are quantitative.
What is the random error? - ANS ✓These are due to not following the method
correctly and can be minimized by repeating results and taking averages.
What can misreading the observations cause - ANS ✓They can cause
qualitative errors.
What is the accuracy? - ANS ✓How close is the data to the true value? Errors
due to the equipment could make the results less.
What is the reliability? - ANS ✓How trustworthy the data is. It is usually
ensured by repeating the readings to identify any anomalous results.
BTEC APPLIED
BTEC
BTEC APPLIED SCIENCE UNIT 3 EXAM
QUESTIONS AND ANSWERS UPDATED
(2024/2025) (VERIFIED ANSWERS)
What is the control variable? - ANS ✓The variables you keep constant during
an investigation.
What should a method be? - ANS ✓A step-by-step set of instructions, Be
logically ordered, allows you to take sensible measurements, and allows you to
test your hypothesis.
When planning your method what do you need to make sure? - ANS ✓That it
will procedure a range of results, reliable results, precise results, and accurate
results.
What are some types of data? - ANS ✓The data can be continuous such as the
age of plant ir number of plants. Some data can be a mixture of numbers and
names such as the number of different types of plants found in a garden.
What data is normally displayed on a bar chart? - ANS ✓Continuous data. You
need to make sure its a smooth curve of best fit, and that the curve goes through
or near most of the points.
What are bar charts used for? - ANS ✓They are used for discrete data but can
be used to compare different sets of data.
What is the trend on a graph? - ANS ✓The relationship between factors on the
graph or in the table. The full trend is that the volume increases as the time
increases but then levels off after a certain amount of time.
BTEC APPLIED
, 2
BTEC
What is the sample size? - ANS ✓The number of people sampled in the
investigation. To be confident in your conclusions you need a large sample size to
give strong evidence.
What is Primary data? - ANS ✓This is the data that you have gathered for
yourself through the experiments or investigations .
What is secondary data? - ANS ✓The data that you get in books, scientific
papers or the internet. You should compare your primary and secondary data to
draw a conclusion
How do you know if the data is anomalous? - ANS ✓It doesn't fit into the
pattern of the other results. It does not lie close to the line of best fit.
What can cause the anomalous data? - ANS ✓Not following the method
correctly. inaccurate measuring/recording and impurities.
What is systemic error? - ANS ✓The error that is built into the method or
equipment which you are using. This can be corrected by calibrating the balance.
These errors are quantitative.
What is the random error? - ANS ✓These are due to not following the method
correctly and can be minimized by repeating results and taking averages.
What can misreading the observations cause - ANS ✓They can cause
qualitative errors.
What is the accuracy? - ANS ✓How close is the data to the true value? Errors
due to the equipment could make the results less.
What is the reliability? - ANS ✓How trustworthy the data is. It is usually
ensured by repeating the readings to identify any anomalous results.
BTEC APPLIED
