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What is the difference between a histogram and a bar chart? How can I find the frequency density?

In a bar chart, the vertical axis represents the frequency. On the other hand, in a histogram, it is the area which represents the frequency. Therefore, the label of the vertical axis on a histogram should b...
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Answered by Michelle C. • Maths tutor
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What is an inferior good?

The income elasticity of demand measures the relationship between a change in quantity demanded and a change in income. The formula is: (Percentage change in quantity demanded of good x) divided by (the perc...
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The Problem of Evil: What is the inconsistent trial?

The problem of evil is often given in the form of an inconsistent triad. For example, J. L. Mackie gave the following three propositions: God is omnipotent God is omnibenevolent Evil exists Mackie argued tha...
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What is a catalyst?

A catalyst lowers the activation energy of a reaction and therefore increases the rate of reaction. The catalysts reacts with the reactants but is regenerated again in the reaction so it is not used up.
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Answered by Hannah G. • Chemistry tutor
6097 Views

How do I factorise a quadratic equation?

A quadratic equation is one with a squared term, like 3x 2 + 9x. If you're asked to factorise an equation like this, you need to find the highest common factor . This means that you need to find the highest ...
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Answered by Eden A. • Maths tutor
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