Answer:
[tex] \boxed{13.15}[/tex]
Step-by-step explanation:
( See the attached picture )
Now,
Mean = [tex] \mathsf{\frac{Σfx}{n} }[/tex]
[tex] \mathsf{ = \frac{250}{19} }[/tex]
[tex] \mathsf{ = 13.15}[/tex]
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In the case of repeated data , follow the steps given below to calculate the mean :
- Draw a table with 3 columns
- Write down the items ( x ) in ascending or descending order in the first column and the corresponding frequencies in the second column.
- Find the product of each item and it's frequency ( fx ) and write in the third column.
- Find the total of f column and fx column.
- Divide the sum of fx by the sum of f ( total number of items ) , the quotient is the required mean.
Hope I helped!
Best regards!
