Flashcards
Chapter 22
Cards in this deck (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.