\
The numbers are
The mean is the sum of the data items divided by the number of data items.
Mean
(Add: )
(Divide: )
The mean is .
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=916a005fe5c914f85e5c06098dc5f538.png\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=efc246528e2555732bde868f186791fe.png\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=20d47b2b4006f64b30f5fac40ce0d3e3.png\")
(Add: ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2d2dba1edc183247f3740800c213a38e.png\")
)![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=6b23cff96eafa216c25c803d1cd4a0cf.png\")
(Divide: ![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=f3f7fcc69acb1897cf430f59539e45c3.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"/MathKey/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=ffc004b23092f6337321d3e0a8f150ed.png\")
.