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In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr or 3 σ, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean ...
Component charts have become an increasingly important way to measure the commercial success of individual songs. Reviewers often describe records using round number milestones within a chart. For example, a record that peaks at number 7 may be called a "Top 10" hit , even when there is no chart limited to only the top 10 records in that ...
In 2008, for the 50th anniversary of the Hot 100, Billboard magazine compiled a ranking of the 100 best-performing songs on the chart over the 50 years, along with the best-performing artists. [1] In 2013, Billboard revised the rankings for the chart's 55th anniversary edition. [ 2 ]
A mosaic plot, Marimekko chart, Mekko chart, or sometimes percent stacked bar plot, is a graphical visualization of data from two or more qualitative variables. [1] It is the multidimensional extension of spineplots, which graphically display the same information for only one variable. [ 2 ]
Sometimes, the best-selling album of the year by Billboard is different than best-selling album of the year of Nielsen SoundScan, because Billboard calculates the year from December to November and Nielsen calculates the year from January to December. In this list, from 1956 to 1991, the Billboard year-end tracking was used. From 1992 to date ...
Data visualization uses information displays (graphics such as, tables and charts) to help communicate key messages contained in the data. [46] Tables are a valuable tool by enabling the ability of a user to query and focus on specific numbers; while charts (e.g., bar charts or line charts), may help explain the quantitative messages contained ...
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Largest intraday percentage gains An intraday percentage gain is defined as the difference between the previous trading session's closing price and the intraday high of the following trading session. The closing percentage change denotes the ultimate percentage change recorded after the corresponding trading session's close.