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Chapter 22

McKenzie Layton Inglés 15 fichas

Fichas del conjunto (15)

1MeanStatistical term that is found by: Sum of all figures ÷ Number of figures, 574–575.
2Weighted meanUsed to find an average when values appear more than once, 574.
3MedianStatistical term that represents the central point or midpoint of a series of numbers, 575–576.
4ModeValue that occurs most often in a series of numbers, 576.
5Frequency distributionShows by table the number of times event(s) occurs, 577.
6Bar graphVisual representation using horizontal or vertical bars to make comparison or to show relationship on items of similar makeup, 578–580.
7Line graphGraphical presentation that involves a time element. Shows trends, failures, backlogs, and the like, 580.
8Circle graphsA visual representation of the parts to the whole, 581–582.
9Index numbersExpress the relative changes in a variable compared with some base, which is taken as 100, 582–583.
10Price relativeThe quotient of the current price divided by some previous year’s price—the base year—multiplied by 100, 582.
11Measure of dispersionNumber that describes how the numbers of a set of data are spread out or dispersed, 584–586.
12RangeDifference between the highest and lowest values in a group of values or set of data, 584.
13Standard deviationMeasures the spread of data around the mean, 584–585.
14Normal distributionData are spread symmetrically about the mean, 585–586.
15Empirical RuleFor a normal distribution, nearly all the data fall within three standard deviations of the mean, 586.