Question

if sigma fi xi = 20 and sigma fi = 4 what is the mean of the data

Answer 1

The mean of the data when sigma(fixi) = 20 and sigma $f_{i}$ is 4 is 5.

• Mean is the average of given observations.
• It is calculated by taking the ratio of sum of observations to number of observations in case of ungrouped data.
• When we are given x and f values, then mean is calculated as follows

                         $Mean=\frac{sigma(f_{i}x_{i}) }{sigma(f_{i}) }$

        Given,

                  $sigma(f_{i}x_{i})=20,sigma(f_{i})=4$

                           Mean = 20/4

                           Mean = 5

Answer 2

Answer:

he mean of the data when sigma(fixi) = 20 and sigma  is 4 is 5.

Mean is the average of given observations.

It is calculated by taking the ratio of sum of observations to number of observations in case of ungrouped data.

When we are given x and f values, then mean is calculated as follows

                         

       Given,

                 

                          Mean = 20/4

                          Mean = 5

Step-by-step explanation: