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What is the difference between a one-tailed or two-tailed experimental hypothesis?

A one tailed hypothesis, or directional hypothesis, predicts the actual DIRECTION in which the findings will go. It is more precise, and usually used when other research has been carried out previously, givi...
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Answered by Olivia S. • Psychology tutor
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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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