document.write( "Question 1048878:  Given the following five-number summary, find the IQR.
\n" );
document.write( "2.9, 5.7, 10.0, 13.2, 21.1\r
\n" );
document.write( "\n" );
document.write( "The answer is 7.5, but how do I get that? \n" );
document.write( "
| Algebra.Com's Answer #664433 by rothauserc(4718)     You can put this solution on YOUR website! The IQR is the difference between the third quartile and the first quartile \n" ); document.write( ": \n" ); document.write( "minimum is 2.9 \n" ); document.write( ": \n" ); document.write( "median is the number which half of numbers are below and half of the numbers are above (2.9, 5.7, 10.0, 13.2, 21.1) = 10.0 \n" ); document.write( ": \n" ); document.write( "first quartile is the median of the data below the overall median = (2.9 + 5.7) / 2 = 4.3 \n" ); document.write( ": \n" ); document.write( "third quartile is the median of the data above the overall median = (13.2 + 21.1) / 2 = 17.15 \n" ); document.write( ": \n" ); document.write( "**************************** \n" ); document.write( "IQR = 17.15 - 4.3 = 12.85 \n" ); document.write( "**************************** \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( " |