Calculating statistics

Calculating Statics

You can use statistics to summarise sets of data and to compare different sets of data.

       You have to be able to calculate mean, mode, median, and range.

   J Mode:  The most common value that appears 

   J Median: The middle value when they are listed in order. 

   J Mean:  The average value of all of the numbers/values.
                          

* Range: The deviation between the largest value and the smallest value.

                      a) Largest value – smallest value

                               

  ü Range is not an average but it measures how spread out a set of values                           or numbers is.

        ü For a large set of data, it’s not practical to list every number separately.                         Instead, you can record a data in a frequency table.

        

      

     

          

             a)    Find the mode.

             b)    Find the mean.

             c)    Find the range.

             a) The mode is 35

           *because the frequency of 35 is 61 which is the highest*

             

              b)    6900 : 200 = 34.5

           *6900 is the sum of all the frenquencies, and 200 is the number of values*

              c) 50 – 25 = 25

           *50 is the largest value while 25 is the smallest value*

                                                                     

That's all for this session and thanks your attention :)