In analyzing, statistical data, it is often useful to have numbers describe the complete set of data. 2. 0000003431 00000 n %%EOF Averages are also called Measures of Central Tendency. �q}������k��R�����ߛ�֊�T�jp����c�5��+�h�_��#,��h�`���ۊZ��L��=�������j�S�k�Y�0!��$��N[}��&F���4X�w/ $%�w�� ii. 0000002372 00000 n Average: It is a value which is typical or representative of a set of data. CBSE Syllabus Class 12 Maths Physics Chemistry ... CBSE Syllabus Class 11 Mathematics biology chemistry ... CBSE Syllabus Class 10 Maths Science Hindi English ... CBSE Syllabus Class 9 Mathematics Science English Hindi ... Revised Syllabus for Class 12 Mathematics. Describing Data: Measures of Central Tendency and Dispersion I n the previous chapter we discussed measurement and the various levels at which we can use measurement to describe the extent to which an individual observation possesses a particular theoretical construct. It is obtained by dividing the sum of all observation in a series by the total number of observation. Quartiles. J�`�;lf�]��dO��T0������E=��'@��9pr����;�::�-�4:�|��F� �5���s �29PX��9p��d measure of central tendency, there are situations where the mean does not provide a good, representative value, and there are situations where you cannot compute a mean at all. 4] Sometimes misleading or absurd result. ii. Measures of Ccentral Tendency and Dispersion PDF Free Download Important Term and Concepts: 1. Least affected by sampling fluctuation. xref 0000001347 00000 n 0000001809 00000 n 0000006101 00000 n • When a distribution contains a few extreme scores (or is very skewed), the mean will be pulled toward the extremes (displaced toward the tail). It is the most common type of measures of central tendency. Link of our facebook page is given in sidebar. 3] Cannot be graphically ascertained. vi. N'��)�].�u�J�r� You can think of it as the tendency of data to cluster around a middle value. 0000038517 00000 n startxref i] Presents complex data in a simple form. 0000001571 00000 n 0000038214 00000 n INTRODUCTION In the pr evious chapter , you have r ead about the tabular and graphic representation of the data. iii] Helps government to form policies. endstream endobj 177 0 obj<> endobj 178 0 obj<> endobj 179 0 obj<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC/ImageI]/ExtGState<>>> endobj 180 0 obj<> endobj 181 0 obj[/ICCBased 189 0 R] endobj 182 0 obj[/Indexed 181 0 R 15 191 0 R] endobj 183 0 obj[/Indexed 181 0 R 15 193 0 R] endobj 184 0 obj[/Indexed 181 0 R 15 195 0 R] endobj 185 0 obj[/Indexed 181 0 R 15 197 0 R] endobj 186 0 obj<> endobj 187 0 obj<> endobj 188 0 obj<>stream “Measures of central tendency” are used because they represent centralized or middle values of the data. Please send your queries to [email protected] you can aslo visit our facebook page to get quick help. ��h33��*Y�g��W F�i����C����d�����Ȓ���5�@j4�n���bѲ���U��C��Df*�e*���⡭�,V� �������s��̡4�y��m��μ�����=t���.2�4*g��X�݆=��\~����u�^=���9����u'/(��Wp-�^�� �mbk��IG��0���� �]��Qи�%.�rW C�k��`��3�����F��eNnpZS��rG8�g_��FvZ&�H3��C��49C�8�:p�%Ξ�MN����3-F�`�\��n�0�k��M� dè "F$H:R��!z��F�Qd?r9�\A&�G���rQ��h������E��]�a�4z�Bg�����E#H �*B=��0H�I��p�p�0MxJ$�D1��D, V���ĭ����KĻ�Y�dE�"E��I2���E�B�G��t�4MzN�����r!YK� ���?%_&�#���(��0J:EAi��Q�(�()Ӕ[email protected]���P+���!�~��m���D�e�Դ�!��h�Ӧh/��']B/����ҏӿ�?a0n�hF!��X���8����܌k�c&5S�����6�l��Ia�2c�K�M�A�!�E�#��ƒ�d�V��(�k��e���l ����}�}�C�q�9 Such a description is referred to as a datum. Rigidly defined. 4] Capable of further mathematical calculations. Based on all items of observation. Measures of Central Tendency 1. 1] Easy to calculate x�b```�V�P``a`b� �D�������g�oF '�a �]� ϙ���L �9�͘[��0�1�0�21��`���a��$�YLQL^W�Vgff������;��2�Y:��S����b���YA)�b�'8���9~X�����)w��!Pd�t�f�����1��ݪ�t��� �m�:ǁz��*U6�3�z'��i��x�Ip�ꬢ� 0 1] Affected by extreme values. – Median • The score in the middle when the scores are ordered. Measures Of Central Tendency And Dispersion PDF Free Download. 3] Based on all observations 2] Simple to understand i. Arithmetic Mean iv. 0000038418 00000 n It should be easy to understand. 0000002510 00000 n �x������- �����[��� 0����}��y)7ta�����>j���T�7���@���tܛ�`q�2��ʀ��&���6�Z�L�Ą?�_��yxg)˔z���çL�U���*�u�Sk�Se�O4?׸�c����.� � �� R� ߁��-��2�5������ ��S�>ӣV����d�`r��n~��Y�&�+`��;�A4�� ���A9� =�-�t��l�`;��~p���� �Gp| ��[`L��`� "A�YA�+��Cb(��R�,� *�T�2B-� H�ĔOk1���stK=ь�Ҫ��1�P�B��qJ �V��)g�B�0�i�W��8#�8wթ��8_�٥ʨQ����Q�[email protected]�&�A)/��g�>'K�� �t�;\�� ӥ$պF�ZUn����(4T�%)뫔�0C&�����Z��i���8��bx��E���B�;�����P���ӓ̹�A�om?�W= In this chapter, you will study the measures of central tendency which is a numerical method to explain the data in brief. n�3ܣ�k�Gݯz=��[=��=�B�0FX'�+������t���G�,�}���/���Hh8�m�W�2p[����AiA��N�#8$X�?�A�KHI�{!7�. These measures indicate where most values in a distribution fall and are also referred to as the central location of a distribution. 0000002336 00000 n Averages are also called Measures of Central Tendency. 2] Cannot be calculated in open-end series. Central Tendency • Measures of Central Tendency: – Mean • The sum of all scores divided by the number of scores. 199 0 obj<>stream v. Least affected by extreme values. 0000000776 00000 n iii. Copyright @ A free educational website for CBSE, ICSE and UP board. Capable of further algebraic treatment. 0000002418 00000 n J F QVDi� ��e`���E�X'*��5�#�&;05�2p1naX��`����B�90��t`� ��t�`��6��|��/d(��  �v�sT/�c���� �Զ���������3��o �7 b0 S���