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Outliers could also be evidence of a sample population that has a non-normal distribution or of a contaminated population data set. Consequently, as is the basic idea of descriptive statistics , when encountering an outlier , we have to explain this value by further analysis of the cause or origin of the outlier.
Second quarter (Q2): Jan. 1 through March 31. Third quarter (Q3): April 1 through June 30. Fourth quarter (Q4): July 1 through Sept. 30. Caitlyn Moorhead contributed to the reporting for this article.
However, a normal distribution can be trivially perturbed to maintain its Q1 and Q2 std. scores at 0.67 and −0.67 and not be normally distributed (so the above test would produce a false positive). A better test of normality, such as Q–Q plot would be indicated here.
For any population probability distribution on finitely many values, and generally for any probability distribution with a mean and variance, it is the case that +, where Q(p) is the value of the p-quantile for 0 < p < 1 (or equivalently is the k-th q-quantile for p = k/q), where μ is the distribution's arithmetic mean, and where σ is the ...
Costco posted fiscal second-quarter earnings results Thursday, March 2, after market close that mostly beat expectations.Shares were down more than 2% after the release. As consumers sought out ...
Microsoft announced its second quarter earnings on Tuesday, beating expectations on the top and bottom lines.The company reported adjusted earnings per share of $2.93 on revenue of $62 billion ...
This example calculates the five-number summary for the following set of observations: 0, 0, 1, 2, 63, 61, 27, 13. These are the number of moons of each planet in the Solar System . It helps to put the observations in ascending order: 0, 0, 1, 2, 13, 27, 61, 63.
GM's Q2 revenue rose 25% from a year ago and 11.8% sequentially. GM's adjusted earnings per share (EPS) came in at $1.91 versus the $1.65 the Street was expecting.