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.

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

In fact, the place where we have indicted more terrorists or potential terrorists, is our Northern border.

That someone like Obama could be elected president of the United States - with its unrivaled power and prestige - has begun to restore the country's and the world's faith in America as the land of opportunity.

Politics is the only field in which the more experience you have, the worse you get.

In one sense I feel that my book is a one-woman argument against determinism.

I enjoy doing fun things outdoors with my son to stay in shape. We like camping together. After a weekend in the woods, I'm sorer than after a week at the gym!

In a perfect world, I would never give another speech, address, talk, lecture or whatever as long as I live.

Simplicity is the ultimate sophistication.

I just want people that like my music to like me.

All cooking is a matter of time. In general the more time the better.

No one rejoices more in revenge than woman.

A lot of critics are lazy. They don't want to look closely and analyze something for what it is. They take a quick first impression and then rush to compare it to something they've seen before.

Apparently there is nothing that cannot happen today.

In my line of business, there's no better feeling than having a real nice work that you're really satisfied with.

Enlightenment is a timeless void. It's an emptiness that's filled with the most excellent light.

I have 23 top players and they are all ready to put on the jersey and work on the pitch and that makes you happy and then you have peace of mind.

Opinion is that exercise of the human will which helps us to make a decision without information.

Be you. Do you. For you.

Now that I'm a parent, I understand why my father was in a bad mood a lot.

I have thought you could not give everything to your books and also to your children, so for a long time, I thought if I had a child or a family, I'd think, 'How would I support them?' because basically I would stop writing.

One of the things about genetics that has become clearer as we've done genomes - as we've worked our way through the evolutionary tree, including humans - is that we're probably much more genetic animals than we want to confess we are.

A great review is great. A bad review is the worst.

Everyone says I'm like the girl next door... Y'all must have really weird neighbors!

My father was often impatient during March, waiting for winter to end, the cold to ease, the sun to reappear. March was an unpredictable month, when it was never clear what might happen. Warm days raised hopes until ice and grey skies shut over the town again.

I'm a shape shifter.