document.write( "Question 1159761: The following table shows the number of prescriptions a doctor wrote each day for a 36-day period. Find the first, second, and Third quartile.
\n" ); document.write( "8 12 14 10 9 16
\n" ); document.write( "7 14 10 7 11 16
\n" ); document.write( "11 12 8 14 13 10
\n" ); document.write( "9 14 15 12 10 8
\n" ); document.write( "10 14 8 7 12 15
\n" ); document.write( "14 10 9 15 10 12 \n" ); document.write( "

Algebra.Com's Answer #782973 by greenestamps(13200) $\"\"$ $\"About$

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\n" ); document.write( "It's tedious but straightforward, and involves only simple arithmetic. You can do the actual work yourself; it makes no sense for us to take the time to do it.

\n" ); document.write( "There are 36 data points.

\n" ); document.write( "(1) Arrange them in order from smallest to largest.

\n" ); document.write( "(2) Group the data into 4 groups of equal size; each group will contain 36/4 = 9 of the data points.
\n" ); document.write( "group 1: 1st-9th values
\n" ); document.write( "group 2: 10th-18th values
\n" ); document.write( "group 3: 19th-27th values
\n" ); document.write( "group 4: 28th-36th values

\n" ); document.write( "Each quartile is the average of the largest value in one group and the smallest value in the next:
\n" ); document.write( "The first quartile is the average of the 9th and 10th values.
\n" ); document.write( "The second quartile is the average of the 18th and 19th values.
\n" ); document.write( "The third quartile is the average of the 27th and 28th values.

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