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Describe the different types of extraneous variables.

Situational Variables: Factors connected to the research situation that could affect the dependent variable (the thing that you are measuring). For example; temperature, noise, lighting Participant Variables...
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Answered by Olivia S. • Psychology tutor
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What is the difference between quantitative and qualitative data?

Quantitative Data - Data in the form of numbers- Concerned with individual scores- Can be analysed statistically and easily converted into percentages, averages, graphs etc- eg how much, how long or how many...
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Answered by Olivia S. • Psychology tutor
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How do I use the chain rule for differentiation?

The chain rule is used when we have a function in the form f(g(x)). For example sin(x^3). [In this case, f(x) = sin(x) and g(x) = x^3] The chain rule says that the derivative of f(g(x)) is g'(x)*f'(g(x)). Fo...
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Answered by Tom K. • Maths tutor
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Factorise x^2 + 7x + 10

'Factorise' essentially means put into a simpler form, in this case with two sets of linear equations which would multiply out to give the quadratic equation shown above. What we are looking for to begin wit...
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Answered by David J. • Maths tutor
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Explain the difference between short term growth and long term growth

Short term growth is, as the name suggests, growth in the output of a country in terms of GDP over a given (short, usually a year) period of time. It is measured by the annual percentage change in GDP. Long ...
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Answered by David J. • Economics tutor
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