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

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

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.

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

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

Tackling deprivation around the world is a moral imperative and firmly in Britain's national interest.

Producers are men who will keep their heads in the noisy presence of writers and directors and not be carried away by art in any of its subversive guises. Their task is to guard against the unusual. They are the trusted loyalists of cliche.

Fate determines many things, no matter how we struggle.

I think that people, despite my law enforcement background, view me as taking these consistently progressive stands, and I think that, philosophically, there is a desire to get at that person. But I think the stands I have taken are totally consistent with a person who is looking at things realistically, factually.

It looks like it's been furnished by discount stores.

I don't care about the quality of the film as a whole, but I loved 'Salt.' I loved it!

We have a shotgun we inherited from my father-in-law, a paranoid Englishman living in Texas. I have a .22 Marlin rifle, similar to the one Annie Oakley had, and my husband has a .357 Magnum pistol. All those are locked up tight, of course. We have a couple of pellet guns that get more use than the real guns.

And that's the soulful thing about playing: you offer something to somebody. You don't know if they'll like it, but you offer it.

I'm as proud of many of the things we haven't done as the things we have done. Innovation is saying no to a thousand things.

I didn't have my parents to rebel against, but I had society, and that definitely is what they taught me. Just: Trust nothing.

When did I start comedy? I came out of the womb and did 10 minutes.

People will come up to me at shows and tell me that a song touched them in a completely different way than I wrote it. That's fun. Fans translating it in their own way.

I've been studying on my own. I'm not really trained. I went to school for about a year and a half. I never really studied music, but, I mean, I did. I studied for two years, maybe.

My definition of an intellectual is someone who can listen to the William Tell Overture without thinking of the Lone Ranger.

I'm just constantly trying to be a good dad.

This is a place where you can go, that you can feel safe and look inside yourself and discover yourself.

It's hard enough to write a good drama, it's much harder to write a good comedy, and it's hardest of all to write a drama with comedy. Which is what life is.

We cannot aim at anything less than the Union of Europe as a whole and we look forward with confidence to the day when that Union will be achieved.

The economy's always been the engine for our national security.

As soon as a regular guy like Bill Clinton becomes the president, he wears a mantle of greatness. He's the president.

It's hard to think of myself as an American, and yet I am not from India, a place where I was not born and where I have never lived.

One thing is for certain: under President Obama, home schooling will become a huge growth industry.

I'm a 'Bridesmaids' type of girl. I love silliness. That's who I am at heart, and I know I can do it. If my career path takes me elsewhere, that's great. But comedy is my forte.

To this day I don't ever remember seeing a pet inside Moscow, I never saw anyone carrying a dog, or leading a dog. Err I finally saw a, a pet some years later in Kiev, so I thought that life must have been, different.