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rotación de la latitud: how fast the view of the earth is rotated - degrees per second, latitude
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3. 4. initial tips one common mistake of many candidates at the numerical reasoning tests is trying to use very often the calculator, probably considering that this is the reason why we have this tool (twice, in facthe physical and the on-screen ones). and maybe creating in their minds a (false) sense of security, thinking something like: "well, i am not very good in maths, but, at least, everything lyrics do with my calculator will be right…" on the contrary, we can affirm that an overuse of the calculator is indeed the first pitfall that the candidate should avoid. epso does not organise these tests to check how fast we can handle this instrument, which is of course much more basic than any computer or callulation tool that employees have today. the real target of this exercise is to evaluate our ability to do simple mental calculations and identify relationships between amounts from tables or graphs. so we will find many exercises in which we will only need to use the calculator once or twice (even sometimes it is fully unnecessary, as we will show in some of our sample questions). another issue that we should consider carefully is the unit, scale, percentage or way of expression of the relevant magnitudes. a question can mix data in different units (e.g., kilograms in the statement and tonnes in the table), present some information in several scales (like thousands of inhabitants in the answer options and millions of people in the chart), or put together some figures in percentages and percentage points. the third important matter to be aware of is time management. as we previously said, the main obstacle to succeed in numerical reasoning tests is not the complexity of calculations, but the time constraints. if we must solve 8
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