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Opinion can influence the hypothesis and be the reason for conducting an experiment.

Unit 4 - Is Hypothesis Supported by the Data?

This GCSE Biology quiz helps you decide whether experimental results support your hypothesis, using patterns in the data to judge if your original idea still fits.

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(quiz starts below)

Fascinating Fact:

If the data do not match the prediction, then the hypothesis is not supported. This is still useful because it suggests that your original idea needs to be revised.

In GCSE Biology, you use data from practical work to test ideas. You compare the pattern in your results with your prediction to decide whether your hypothesis is supported.

Key Terms

Hypothesis: A testable scientific idea that predicts how one variable will affect another.
Prediction: A specific statement of what you expect to happen if the hypothesis is correct.
Trend: The overall pattern in the data, such as one value increasing as another increases.

Frequently Asked Questions (Click to see answers)

How do I know if my data supports a hypothesis in GCSE Biology?

To decide if data supports a hypothesis, compare the pattern in your results with your prediction. If the trend in the data matches your prediction, the hypothesis is supported.

What should I write if my data does not support the hypothesis?

If data does not support the hypothesis, explain that your results did not match the prediction, suggest possible reasons, and state that the original idea may need changing or refining.

Is a hypothesis “wrong” if the data does not match the prediction?

In science we usually say the hypothesis is “not supported” rather than “wrong”. This shows that the evidence does not fit the prediction and that a new or revised hypothesis is needed.

Try These Related Quizzes

1 .

Which of the following could be a practical reason for unexpected data which does not support the hypothesis?

Running out of time

Incorrect measuring of volumes

Being distracted

Working on your own

There are many other sources of error too, including making a link between variables that are not really connected. This can happen if you don't really understand the science behind what you are investigating. Ending up with data that doesn't support the hypothesis can actually be very positive and help you to understand more

2 .

If the data does not support the hypothesis, you should ...

repeat the experiment several times to ensure the accuracy and reliability of the results

write a conclusion based on this first experiment

give up

make up the results

We would always repeat experiments which we were unsure about. Sometimes, it is not possible because of time.

3 .

Which of the following is an example of a hypothesis?

I think that the reaction will be slowed down

I think that the reaction will be faster

I think that if I increase the concentration of acid, the reaction will be faster

If I increase the concentration of acid, there will be more acid particles so I think the reaction will be faster because there will be more collisions

A hypothesis needs to have a reason for the prediction

4 .

A hypothesis is supported by the results.

Always true

Always false

Sometimes true

Never

You won't always come up with a set of results that support your hypothesis

5 .

When the hypothesis is supported, the data is in...

dispute

agreement

negative

borderline

Data supports the hypothesis if it shows agreement. If the data is unexpected, we can repeat the experiment or redesign it

6 .

What is a hypothesis?

A prediction based on previous knowledge

A random guess

The results obtained

A statistical test

Try to make your hypotheses precise and always include information about the science you have based it on

7 .

What is an opinion based on?

Fact

Beliefs

Non factual information

Emotions

Opinions and beliefs are not always based on facts but they could be an interpretation of facts. It can sometimes be difficult to spot whether something is an opinion or a fact

8 .

How would you process the data to work out if your hypothesis is supported?

Work out the average and compare the groups of data

Draw a pie chart

Do more tests

Put the results into a table

There are other useful techniques such as scatter graphs with lines of best fit

9 .

Data we consider for supporting the hypothesis consists of...

results obtained in the past

results from someone else's experiment

results obtained in the current investigation

no results

In the conclusion, always add a statement about how well you think the data supports the original hypothesis

10 .

Why is a control used in scientific experiments?

In order for it to be a fair test

To compare with the experimental group

To increase the sample size

To make it more likely that we get a good result

Experiments usually have a negative control. An example would be a control group of patients in a clinical trial of a new drug being given a sugar pill rather than the drug. We can then make a comparison to determine if the drug works and to see if the data supports the hypothesis. A control is a way of checking the reliability of a set of results

You can find more about this topic by visiting BBC Bitesize - Practical skills

Author: Donna Davidson (GCSE Biology Teacher & Examiner, Quiz Writer)