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Logarithmic scale |
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Logarithmic scale. On a logarithmic scale or graph, comparable percentage changes in the value of an investment, index, or average appear to be similar. However, the actual underlying change in value may be significantly different. For example, a stock whose price increases during the year from $25 to $50 a share has the same percentage change as a stock whose price increases from $100 to $200 a share. On a logarithmic scale, it's irrelevant that the dollar value of the second stock is four times the value of the first. Similarly, the percentage change in the Dow Jones Industrial Average (DJIA) as it rose from 1,000 to 2,000 is comparable to the percentage change when it moved from 4,000 to 8,000. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| He spent seven years analyzing the logarithmic scales of Google and Yahoo to understand how search engines work. Analysis of variance tests were performed to assess the statistical significance of these variables in predicting BLL after a logarithmic scale conversion (because the distribution of BLL was skewed; Figure 1). Overall this process takes about 500 s and the counting rate is shown on a logarithmic scale on the left side of Fig. |
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