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"Scratch a lie, find a thief" is an idiom that suggests that if you investigate or question someone's dishonesty or deceit, you are likely to uncover further wrongdoing or dishonest behavior. The act of scratching at the surface of a lie reveals the truth hidden beneath, just as uncovering a thief's actions can lead to discovering additional criminal behavior. Essentially, this phrase implies that deceit often leads to further deception or misconduct being exposed.

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3mo ago

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What is the approximate percentage score of less than 140 using the 68-95-99.7 rule if a set of test scores is normally distributed with a mean of 100 and a standard deviation of 20?

The 68-95-99.7 rule states that in a normally distributed set of data, approximately 68% of all observations lie within one standard deviation either side of the mean, 95% lie within two standard deviations and 99.7% lie within three standard deviations.Or looking at it cumulatively:0.15% of the data lie below the mean minus three standard deviations2.5% of the data lie below the mean minus two standard deviations16% of the data lie below the mean minus one standard deviation50 % of the data lie below the mean84 % of the data lie below the mean plus one standard deviation97.5% of the data lie below the mean plus two standard deviations99.85% of the data lie below the mean plus three standard deviationsA normally distributed set of data with mean 100 and standard deviation of 20 means that a score of 140 lies two standard deviations above the mean. Hence approximately 97.5% of all observations are less than 140.


What does egregous mean?

outstanding, usually in the sense of outstanding mistake or outstanding lie


What does the 35th percentile mean?

35% of values lie below the 35th percentile. The median (middle value) is the 50th percentile, 50% lie below it and 50% above.


Why can you never really have 100 percent confidence interval?

You can. For example, you can be 100% certain that the value when you roll a die will lie between 1 and 6. Or that the mean of 100 rolls will lie between 1 and 6. It is simply that a 100% CI has little use.


What is a statistic inflection point?

There are two points of infection (the points where the curvature changes its direction) which lie at a distance of one standard deviation above mean and one standard deviation below mean.