Решение количественных задач и работа с данными
Введено| English | Значение |
|---|---|
| numerical entry/njuːˈmerɪkl ˈentri/ | числовой ответ |
| conditional probability/kənˈdɪʃənl ˌprɒbəˈbɪlɪti/ | условная вероятность |
A decision before an answer
- The mean of a data set can stay fixed while its spread changes. Which statistic is the question actually asking for?
- Your goal: Solve algebraic, geometric and data-analysis problems.
Read the relationship
- GRE General quantitative content includes arithmetic, algebra, geometry and data analysis; calculus is not required.
- Select all valid options where requested.
Five values have sum 35. Their mean is:
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Divide sum 35 by count 5.
Use the defining rule
- Read whether a problem asks for one answer, all answers or numerical entry. Check units and form before submitting.
- Enter numerical answers in the required form and use the on-screen calculator appropriately.
Three of four red and one of six blue counters are marked. P(red given marked)?
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Of the four marked counters, three are red.
Check the conditions
- For data interpretation, identify the denominator and whether a percentage is conditional on a subgroup.
- Enter numerical answers in the required form and use the on-screen calculator appropriately.
A class has 12 morning and 8 afternoon students. Of them, 3 morning and 4 afternoon students cycle. P(cycles)=7/20. P(afternoon given cycles)=4/7. The second denominator includes only cyclists.
If 2x+7=19, x = ____.
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Subtract 7 and divide by 2.
Apply the task format
- The on-screen calculator is available for General quantitative sections. Estimate first to catch an entry error.
- Enter numerical answers in the required form and use the on-screen calculator appropriately.
Do not assume a geometric diagram is to scale or replace a conditional denominator with the whole population.
Какой ответ подходит к данному случаю?
Решение алгебраических, геометрических и задач на анализ данных
The GRE General quantitative test requires multivariable calculus.
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Undergraduate calculus belongs to GRE Mathematics, a different test.
Keep the distinctions
- conditional probability 条件概率 — Probability within a specified condition.
- numerical entry 数值填答 — An answer entered as a number rather than an option.
- Solve algebraic, geometric and data-analysis problems.
- Select all valid options where requested.
- Enter numerical answers in the required form and use the on-screen calculator appropriately.
Match each term with its precise meaning in this lesson.
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Keep the distinctions stated in the teaching example.
Put this lesson’s reasoning or event sequence in order.
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The order follows the stated process; check each stage before the next.