Top answers

What is the Phillips Curve?

The Phillips curve shows the inverse relationship between unemployment and inflation named after British economist AW Phillips. Once inflation and unemployment rates were plotted on a scatter diagram, the da...
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Answered by Han Jim Z. • Economics tutor
4325 Views

What’s the difference between validity and reliability?

Research in psychology needs to produce results that are both reliable and valid . In order to do so, also the methods (measures) used in the studies need to reliable and valid. Reliability refers to how con...
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Answered by Sheila C. • Psychology tutor
42774 Views

What is chromatin?

The length of a strand of human DNA is much longer than you’d think! In fact if it was laid out in a straight line it would be several metres in length. The size of a nucleus is approximately 6 micrometers i...
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Answered by Jake H. • Biology tutor
14368 Views

How do I write a good essay for my English Literature GCSE?

Essay writing, for coursework but especially for exams, can seem stressful, but there are some simple steps to writing good essay answers every time. Here are some of my top tips: 1. Always start with a plan...
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21989 Views

How do I conjugate present tense verbs in Arabic?

Arabic verbs change according to pronouns a lot more than English verbs, but luckily they tend to follow regular patterns, so they are not too hard to learn. Here is a simple model to follow using the presen...
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Answered by Abigail D. • Arabic tutor
6848 Views