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11 Cards in this Set
- Front
- Back
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What are the three rules for coutnting how many integers there are between two integers?
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If one of the endpoints is included, subtract
If both endpoints are included, subtract and add 1 If neither endpoint is included, subtract and subtract one more. |
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If two jobs need to be completed and there are m ways to do the first job and n ways to do the second job, then ?
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there are m * n ways to do one job followed by the other.
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When would a venn diagram apply in the GRE?
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They can ask you a question about it or you can utilize using one.
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If E is any even, what is the probability the E will occur?
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P(E) = number of favorable outcomes over total number of possible outcomes (assuming that the possible outcomes are all equally likely).
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Let E be an event, and P(E) the probability that it will occur:
If E is impossible? If it is certain E will occur? In all cases? |
Impossible: P(E) = O
Certain: P(E) = 1 All cases: 0 equal or less than 1 P (E) equal or less than 1. |
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If an experiment is done two (or more) times, what is the probability that first one even will occur and then a second will occur?
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The product of the two probabilities
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What is the first thing you should do when you have data interpretation questions?
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Read the titles and study the charts before even reading the question.
Also, look for different measurements/ values when comparing. |
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What is a common mistake in data interpration questions?
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Confusing percents and numbers. Absolute numbers versus percents.
This is serious when the questions involved percent increases and decreases. |
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If something increase double the amount, how much percent increase is that?
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100%
e.g., 200 million to 400 million |
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How do you determine the ratio of two numbers that vary in units?
E.g., Ratio of 200 million dollars and 8 billion dollars? |
???
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When you have a bar chart, how may it be faster to answer an average question?
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Can you visulaize a line across the graph so that you have the same amount of grey area above the line as the white area below?
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