High School Maths Examples and Questions

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Answers − Mean of a Frequency Table

1.  Find the Σf, Σfx and mean in the following frequency table
  
Marks x 6 7 8 9
Frequency f 2 3 6 3

2.  Find the Σf, Σfx and mean in the following frequency table
  
Shoe size x 3 4 5 6
Frequency f 2 5 3 1

3.  Find the Σf, Σfx and mean in the following frequency table
  
Gold stars x 1 2 3 4 5
Frequency f 5 6 3 2 1

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