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  2. Evaluation of binary classifiers - Wikipedia

    en.wikipedia.org/wiki/Evaluation_of_binary...

    The positive and negative prediction values would be 99%, so there can be high confidence in the result. However, if the prevalence is only 5%, so of the 2000 people only 100 are really sick, then the prediction values change significantly.

  3. Confidence interval - Wikipedia

    en.wikipedia.org/wiki/Confidence_interval

    A 95% confidence level does not mean that 95% of the sample data lie within the confidence interval. A 95% confidence level does not mean that there is a 95% probability of the parameter estimate from a repeat of the experiment falling within the confidence interval computed from a given experiment. [25]

  4. Test score - Wikipedia

    en.wikipedia.org/wiki/Test_score

    The purpose of scaled scores is to report scores for all examinees on a consistent scale. Suppose that a test has two forms, and one is more difficult than the other. It has been determined by equating that a score of 65% on form 1 is equivalent to a score of 68% on form 2. Scores on both forms can be converted to a scale so that these two ...

  5. Super-rich Americans like Mark Zuckerberg and Jay-Z have ...

    www.aol.com/finance/super-rich-americans-mark...

    But back in 2017, when their net worth was $1.6 billion, the power couple took out a $52 million loan to buy a hillside estate in Los Angeles., worth $88 million, according to a report published ...

  6. IQ classification - Wikipedia

    en.wikipedia.org/wiki/IQ_classification

    IQ scores can differ to some degree for the same person on different IQ tests, so a person does not always belong to the same IQ score range each time the person is tested (IQ score table data and pupil pseudonyms adapted from description of KABC-II norming study cited in Kaufman 2009). [12] [13] Pupil KABC-II WISC-III WJ-III Asher: 90: 95: 111 ...

  7. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    If the mean =, the first factor is 1, and the Fourier transform is, apart from a constant factor, a normal density on the frequency domain, with mean 0 and variance /. In particular, the standard normal distribution φ {\textstyle \varphi } is an eigenfunction of the Fourier transform.

  8. ‘A one-man economy’ who no one dared oppose: Working for Sean ...

    www.aol.com/finance/one-man-economy-whom-no...

    When Sean “Puffy” Combs joined the A&R department at Uptown Records in 1990, his first assistant, Pam Lewis-Rudden, looked at her 20-year-old boss and considered her own career.

  9. Coherent risk measure - Wikipedia

    en.wikipedia.org/wiki/Coherent_risk_measure

    Under these conditions the 95% VaR for holding either of the bonds is 0 since the probability of default is less than 5%. However if we held a portfolio that consisted of 50% of each bond by value then the 95% VaR is 35% (= 0.5*0.7 + 0.5*0) since the probability of at least one of the bonds defaulting is 7.84% (= 1 - 0.96*0.96) which exceeds 5%.