"54,55,56,57,57,57,58,58,60,60,60,60,61,62,63,"
"64,67,68,68,68,68,68,69,69,69,70,70,70,70,70,"
"71,72,72,73,74,75,75,75,75,76,77,77,78,80,80,"
"81,82,82,83,83,83,83,84,84,84,84,85,86,86,87,"
"87,88,88,88,88,89,90,90,90,90,90,90,90,91,91,"
"92,92,93,93,93,93,94,94,94,95,96,96,99,100,"
"100,101,101,101,102,102,103,104,105"
Take class intervals of 10.
"mean={1 \\over n}\\displaystyle\\sum_{i=1}^nx_i"
"mean={1 \\over n}(54+55+56+3\\cdot57+2\\cdot58+4\\cdot60+""+61+62+63+64+67+5\\cdot68+3\\cdot69+5\\cdot70+""+71+2\\cdot72+73+74+4\\cdot75+76+2\\cdot77+78+""+2\\cdot80+81+2\\cdot82+4\\cdot83+4\\cdot84+85+2\\cdot86+""+2\\cdot87+4\\cdot88+89+7\\cdot90+2\\cdot91+2\\cdot92+4\\cdot93+""+3\\cdot94+95+2\\cdot96+99+2\\cdot100+3\\cdot101+2\\cdot102+""+103+104+105)"
Median: The value that lies in the middle of the data when the data set is ordered. If the data set has an odd number of entries, then the median is the middle data entry. If the data has an even number of entries, then the median is obtained by adding the two numbers in the middle and dividing result by two
To find the median, we place all the numbers in order. The data has an even number of entries
We consider 49th variable with value of 83 and 50th variable with value of 83
"median={83+83 \\over 2}=83"Mode: The data entry that occurs with the greatest frequency. A data set may have one mode, more than one mode, or no mode. If no entry is repeated the data set has no mode.
We see that the variable with value of 90 occurs most often (7 times)
"mode=90,\\ unimodal"
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