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How can I remember when each statistical test should be used?

At A-Level there are eight different statistical tests that you need to be aware of. Chi-square: Used for nominal data and independent groups, also used for nominal data and a correlation Sign Test: Nominal ...
Answered by • Psychology tutor
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Solve this equation: x²-x-6=0

This equation can be solved by factorisation. Start off with brackets : (x )(x ) =0. We need two numbers that multiply to give 6 and add/subtract to give 1. Start off with 1 and 6. They multiply to give 6 bu...
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Answered by Eadaoin D. • Maths tutor
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The perimeter of a right-angled triangle is 60cm. The lengths of its sides are in the ratio 3:4:5. Work out the area of the triangle.

Draw out a diagram of a right angled triangle. As the lengths of the sides of the triangle are in the ratio 3:4:5, start off by saying each side is 3cm (a), 4cm (b) and 5cm (c) respectively, with 5cm being t...
ED
Answered by Eadaoin D. • Maths tutor
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How has the writer structured the text to interest you as a reader?

At the beginning of the text, Smith opens with a complex sentence which gives much detail about the setting. This allows the reader to become immediately immersed within the scene as the sensory description ...
CR
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Split 1/x^2-1 into partial fractions

First we need to factorise the denominator into (x-1)(x+1). Now we identify that 1/(x-1)(x+1) is equivalent to A/(x-1) + B/(x+1) and now we solve to find the values of A and B. By simplifying the equivalent ...
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Answered by Thomas M. • Maths tutor
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