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Passé composé is a form of past which used to express a past action which affects the present moment. Passé simple is a form of past tense which describes an action which is SIMPLY past, meaning that this...

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:...

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 equivale...

What is the relationship between price and quantity demanded for a certain good X? PED can help us solve this question. The price elasticity of demand is calculated as the "percentage change in quant...

In one fission reaction 2 or 3 neutrons are released at once, to ensure the effectiveness and the safety of the reaction this must be controlled. A neutron is first slowed down by a moderator, which is us...