Inference Statistics

Flashcard
•
Mathematics
•
10th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a P-value?
Back
A P-value is a conditional probability that measures the strength of evidence against the null hypothesis in a statistical test.
2.
FLASHCARD QUESTION
Front
Is the P-value the probability that the null hypothesis is true?
Back
No, the P-value is not the probability that the null hypothesis is true; it is the probability of observing the data, or something more extreme, given that the null hypothesis is true.
3.
FLASHCARD QUESTION
Front
What does a small P-value indicate?
Back
A small P-value (typically ≤ 0.05) indicates strong evidence against the null hypothesis, leading to its rejection.
4.
FLASHCARD QUESTION
Front
What is a confidence interval?
Back
A confidence interval is a range of values, derived from sample statistics, that is likely to contain the true population parameter with a specified level of confidence.
5.
FLASHCARD QUESTION
Front
How does sample size affect the width of a confidence interval?
Back
Increasing the sample size generally decreases the width of the confidence interval, providing a more precise estimate of the population parameter.
6.
FLASHCARD QUESTION
Front
What is the effect of increasing confidence level on the confidence interval?
Back
Increasing the confidence level (e.g., from 95% to 99%) widens the confidence interval, as it requires a larger range to ensure that the true parameter is captured.
7.
FLASHCARD QUESTION
Front
What is a two-sample t-test?
Back
A two-sample t-test is a statistical method used to compare the means of two independent groups to determine if they are significantly different from each other.
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