please help me figure out the base of this log graph?

please help me figure out the base of this log graph?

http://graphs.gapminder.org/world/#$majorMode=chart$is;shi=t;ly=2003;lb=f;il=t;fs=11;al=30;stl=t;st=t;nsl=t;se=t$wst;tts=C$ts;sp=6;ti=2004$zpv;v=0$inc_x;mmid=XCOORDS;iid=phAwcNAVuyj0TAlJeCEzcGQ;by=ind$inc_y;mmid=YCOORDS;iid=phAwcNAVuyj1jiMAkmq1iMg;by=ind$inc_s;uniValue=8.21;iid=phAwcNAVuyj0XOoBL_n5tAQ;by=ind$inc_c;uniValue=255;gid=CATID0;by=grp$map_x;scale=lin;dataMin=0.842;dataMax=8.7$map_y;scale=log;dataMin=162;dataMax=119849$map_s;sma=49;smi=2.65$cd;bd=0$inds=

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1 Comment for please help me figure out the base of this log graph?

  • 1. ignoramus  |  February 15th, 2011 at 9:23 am

    This is a bit confusing. Are you referring to the graph showing Income per person / Number of children per woman?

    A log. graph usually uses the common logarithm (using base 10), but this does not really tell you anything. The purpose of using a logarithmic plot is just to give a plot which approximates a straight line, rather than a curve which is more difficult to plot.

    Although the graph shows that there is a tendency for higher-income groups to have signinficantly fewer children than lower-income groups, there is a lot of scatter, and any numerical relation would be a very crude approximation at best.

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