Variable A quantity that has the potential to change, e.g. weight, temperature, concentration.

Model A simplified picture of what's physically going on.

Prediction/Hypothesis A specific testable statement, based on a theory, about what will happen in a test situation.

Peer Review Where a scientific report is sent out to peers (other scientists) who examine the data and results, and if they think that the conclusion is reasonable it's published.

Variable A quantity that has the potential to change, e.g. weight, temperature, concentration.

Prediction/Hypothesis A specific testable statement, based on a theory, about what will happen in a test situation

Precise Result A result that is really close to the mean.

Random Error A difference in measurement caused by an unpredictable factor, e.g. human error.

Repeatable Result A Result that can be repeated by the same person using the same method and equipment.

Reproducible Result A result that can be consistently reproduced in an independent experiment.

Valid Conclusion A conclusion that answers the original question.

Accurate Result A result that is really close to the true answer.

Independent Variable The variable you change in an experiment.

Dependent Variable The variable you measure in an experiment.

Control Group A group in a study that is treated in exactly the same way as the experimental group, apart from the factor you're investigating.

Placebo A dummy pill or injection that looks exactly like the real drug, but doesn't contain the drug.

Sample size The number of samples in the investigation, e.g. the number of people in a drug trial

t's not whether you get knocked down, it's whether you get up.

All your acts affect all the people, people that you don't even know. So we have to live with responsibility. We have to live knowing that we're not the only ones here and you're affecting somebody else always.

Melodies are important. I always kind of pride myself on my melodies.

I enjoy my work, no matter who I am working with. Even if you give me a solo silent film, I will enjoy it.

I know many people have said it before, but there is nothing a cup of coffee and a new pair of shoes can't fix!

If a jazz player is really playing, the classical player will have to respect him.

I get along with everybody because I don't believe anybody.

To bear is to conquer our fate.

I'm not a big fan of those who are egotistical and so outspoken.

With Martha Stewart, the power of the brand, the power of television, taught me that if you can marry all those ingredients - like you marry a great song with a great artist - and get the right television exposure, then you've got something that really is going to be sustainable. You can expand and blow up.

Homosexuality is anti-humanity.

I figured that pitchers had a better chance of getting drafted than fielders, so I decided I should be a pitcher. But I never expected to be picked in the first round. I wasn't even sure I'd get picked at all.

God doesn't believe in the easy way.

I'm big on research.

I never felt totally, 100%, patriotically English... I'd seen a lot of the world by an early age - sort of spent a lot of time traveling around Lebanon and I'd seen Babylon, and Damascus, and all sorts of places in the Middle East by the time I was ten. Then we'd return to Ruslip in West London... Done a fair bit of traveling really.

I'm just worried about what I'm doing. Case has played well, and Case is doing a great job. But at the same time, I'm not going to concern myself with him.

Any titles, money, or privilege you inherit are actually hindrances. They delude you into believing you are owed respect.

People exaggerate their confidence in their plans - something we call the planning fallacy... The existence of the plan tends to induce overconfidence.

I have a lot of different influences. Everything from Maroon 5, Gwen Stefani, The Clash, Kanye West - just a lot of different artists.

Do every single thing you can to protect yourself, your family, and your country.

Thank you... adjustable baseball caps with no logo on the front and mesh netting in the back, for being a great way to say, 'Hi, I'm over 80 years old.'

I love the sense of how time passes when I'm acting. When you're not aware of the clock ticking, that is always a good sign you're enjoying something.

I'd rather dig a ditch than go to a dinner party with people I don't know.

One thing, however, I know with certainty: violence, or the direct threat of violence, of the kind we have seen in the past few days, is totally unjustified as a response to any published word or image.