Find the mean of 4, 7, 8, 9, 10, 12, 13, 17

Solution

N = 8
$<pre>uncaught exception: mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56 #0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array) #1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php(56): mkdir('/home/config_ad...', 493) #2 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/FolderTreeStorageAndCache.class.php(110): com_wiris_util_sys_Store->mkdirs() #3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...') #4 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(59): com_wiris_plugin_impl_RenderImpl->computeDigest(NULL, Array) #5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array) #6 {main}</pre>$
∴ $top enclose straight x space equals space fraction numerator sum straight x over denominator straight N end fraction equals 80 over 8 equals 10$

Sponsor Area

Question

Wired Faculty App

Find the mean of: 168, 162, 171, 153, 159, 165, 158, 164

Solution

N = 8
Let assumed mean, A be 160
∴ d = x - A = 8, 2, 11, -7, -1, 5, -2, 4
$sum straight d equals 20$
∴ $top enclose straight x space space equals straight A plus fraction numerator sum straight d over denominator straight N end fraction equals 160 plus 20 over 8 equals 160 plus 2.5 space equals space 162.5$

Question

Wired Faculty App

Find the mean of data:

Solution

$space space straight N space equals space sum f space equals space 7 plus 4 plus 6 plus 3 plus 5 equals 25$
$sum f x space equals space 35 plus 40 plus 90 plus 60 plus 135 equals 360$
$rightwards double arrow$ $top enclose straight x space equals space fraction numerator sum f x over denominator straight N end fraction equals space 360 over 25 equals 14.4$

Question

Wired Faculty App

Find the mean of the data:

Solution

$space space straight N space equals sum f equals space 2 plus 8 plus 10 plus 7 plus 8 plus 5 equals 40$
Let assumed mean, A be 70
∴ $straight d space equals space straight x minus straight A space equals negative 50 comma space minus 20 comma negative 10 comma space 10 comma space 30 comma space 50$