Algebra.Com's Answer #838847 by ikleyn(52788)![\"\"](\"/images/stars/stars-13.gif\")  
You can put this solution on YOUR website!
.\r
\n" );
document.write( "\n" );
document.write( "\r\n" );
document.write( "As this problem is given in the post, it is very elementary level,\r\n" );
document.write( "typical for students who start learning a conception of \"Average\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "It is approximately 6th - 7th grade level of middle school, \r\n" );
document.write( "when a typical student is unfamiliar yet with computer tools like Excel.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "At this level, it is absolutely admittable/allowable to use a standard calculator\r\n" );
document.write( "and to use the formula for a weighted average\r\n" );
document.write( "\r\n" );
document.write( " average =  =  = 3 (rounded).\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "I would say that this method solving this problem is the most expected way.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "At this level, the major goal of the solution is to learn the formula, \r\n" );
document.write( "to understand its meaning and to know how it works.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Which tool to use - is just the secondary question.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Notice that in my solution I rounded my answer to the closest integer number,\r\n" );
document.write( "since the rating of hotels are usually expressed in integer values.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "The fact that the rating of a hotel is usually an integer number is not a necessary requirement\r\n" );
document.write( "to round the average to an integer number. It is simply an argument \"pro\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Nevertheless, you may round to one decimal, too. It will show you to which integer the average value \r\n" );
document.write( "is closer - to a \"3\" or to a \"4\", which still makes sense.\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "But rounding to two or more decimals just makes no any reasonable sense - at least, I do not see such a reason. \r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Next, many students learn the conception of Average in colleges or universities repeatedly \r\n" );
document.write( "in more older age, when they are just familiar with computers and tools like Excel.\r\n" );
document.write( "\r\n" );
document.write( "Then it is totally acceptable to use Excel on your computer and solve this problem \r\n" );
document.write( "as the tutor @Math_tutor2020 does recommend in his post. \r\n" );
document.write( " \r
\n" );
document.write( "\n" );
document.write( "----------------------\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "To see many other similar (and different) solved problems on Average, look into the lessons\r
\n" );
document.write( "\n" );
document.write( " - Solved problems on average scores\r
\n" );
document.write( "\n" );
document.write( " - Solved problems on average age \r
\n" );
document.write( "\n" );
document.write( " - Miscellaneous problems on average values \r
\n" );
document.write( "\n" );
document.write( " - Math circle level problem on average \r
\n" );
document.write( "\n" );
document.write( " - Entertainment problems on average \r
\n" );
document.write( "\n" );
document.write( "in this site.\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "Learn the subject from there, once and for all.\r
\n" );
document.write( "
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( " \n" );
document.write( " |