Question

The scores of an English test (out of 100) of 20 students given below 75,69,88,55,95,88,73,64,75,98,88,95,90,95,98,44,57,67,88,99 find the mean,median and mode of data

Answer 1

Mean = sum of all the observations
              _______________________
               total number of observations

mean= 75+69+88+55+95+88+73+64+75+98+88+95+90+95+98+44+57+67+
              88+99
           _____________________________________________________
                         20
mean=      1601
                  _____= 80.05

                    20 

Median = arrange the following in ascending order which as follows:
44,55,57,64,67,69,73,75,75,88,88,88,88,90,95,95,95,98,99

Median - 88+88 /2
                = 176/2 = 88

mode=    88 as this number has been repeated 4 times             
                                   

Answer 2

Answer :

Hey here is your answer !

Ascending order of given data is as given below :

44, 55, 59, 64, 67, 69, 73, 75, 75, 88, 88, 88, 88, 88, 90, 95, 95, 95, 98, 99

Median = Mean of (n / 2)th and (n / 2 + 1)th

= Mean of (20 / 2)th and (20 / 2 + 1)th

= Mean of (10)th and (11)th observation

Mean of 88 and 88

= 88 marks

Since frequency of 88 marks is maximum i.e. 5

Hence mode of the data is 88.

I hope it will be useful for you...