document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1186972>Question 1186972</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The following are the annual salaries of 19 chief executive officers of major companies. (The salaries are written in thousands of dollars.)\r<BR>\n" );
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document.write( "743, 428, 181, 405, 338, 204, 381, 519, 157, 452, 495, 676, 700, 767, 1108, 248, 134, 586, 75\r<BR>\n" );
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document.write( "Find the 25th and 80th percentile </SPAN>\n" );
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document.write( "order them then count to be sure you have 19.<BR>\n" );
document.write( "25th percentile is 19*.25=4.75 so three-quarters of the way between the 4th and 5th (181, 204). That difference is 23, and three-quarters of that is 17, so 198 is the 25th percentile.<BR>\n" );
document.write( "The 80th percentile is 19*.80 or 15.2 number or 20% of the distance between the 15th and 16th observation.<BR>\n" );
document.write( "That is 20% of the way between 676 and 700 or 4.8. units, so the number is 681, rounded<BR>\n" );
document.write( "75<BR>\n" );
document.write( "134<BR>\n" );
document.write( "157<BR>\n" );
document.write( "181<BR>\n" );
document.write( "204<BR>\n" );
document.write( "248<BR>\n" );
document.write( "338<BR>\n" );
document.write( "381<BR>\n" );
document.write( "405<BR>\n" );
document.write( "428<BR>\n" );
document.write( "452<BR>\n" );
document.write( "495<BR>\n" );
document.write( "519<BR>\n" );
document.write( "586<BR>\n" );
document.write( "676<BR>\n" );
document.write( "700<BR>\n" );
document.write( "743<BR>\n" );
document.write( "767<BR>\n" );
document.write( "1108<BR>\n" );
document.write( " </SPAN>\n" );
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