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

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.

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.

I suppose there are a lot of reasons to be jaded or sarcastic or bitter in life, but I hang on to the reasons why life is beautiful.

There are too many souls of wood not to love those wooden characters who do indeed have a soul.

Every woman I have known has actually deepened my spiritual awareness. Even if I have been a selfish man and treated them badly... There were two women, I won't name them, who had a powerful religious effect on me. The ancient idea of a muse is there.

I have three brothers, and they'd torture me if I ever told them I liked a boy.

I grew up watching American films, listening to American music, and it's a big contribution to the rest of the world. I mean, American jazz, for me, is the best thing culturally that America has produced.

Bruce Willis is Bruce Willis in every single movie I've seen him in, except 'Death Becomes Her' and 'Mortal Thoughts,' which is another movie he was in that was very different from what he normally does.

I just started taking pictures, and it was - it was an instant love affair. It was just ecstatic.

I think I have over 60 apps on my iPhone. I use six.

Curiosity about life in all of its aspects, I think, is still the secret of great creative people.

I remember having a lot of Josh White albums. Johnny Cash. Elvis. I loved the Coasters.

Hairpieces are brilliant for adding volume.

I get depressed at airports.

Once a cheater always a repeater.

I consider the 70s to be the youth of old age. So all you women out there who are afraid of getting older, just keep your orgasms in place, eat a lot of vegetables, take exercise, and you'll be fine.

Now that judges embrace forcibly starving someone to death, Congress should use its appropriation power to starve the judicial budget.

Aging gracefully is supposed to mean trying not to hide time passing and just looking a wreck. Don't worry girls, look like a wreck, that's the way it goes.

A traveler is really not someone who crosses ground so much as someone who is always hungry for the next challenge and adventure.

I was a very keen reader of science fiction.

If you want to build a successful business make sure you have three thingsa big market opportunity great people and more than enough capital.

Young people deserve stable employment opportunities and not mountains of debt. When young people can access the middle class, America is strengthened.

A jazz beat is a dynamic changing rhythm.

I think President Obama has always been a little bit underestimated. Some of the things he's done with foreign policy have been unassailable. Getting us out of Iraq, killing Osama Bin Laden.

That jam was so much fun that by the end of the tour, we just jammed on all of the songs.

I didn't write any music at all, and then, I remember Jon Anderson being very insistent saying that there were two kinds of musicians: the ones who wrote music and the ones who didn't.