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The Following Table Shows the Number of Saplings Planted by 30 Students. - SSC (English Medium) Class 8 - Mathematics

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Question

The following table shows the number of saplings planted by 30 students. Fill in the boxes and find the average number of saplings planted by each student.

No. of saplings
(Scores) xi
No. of students
(frequncy) fi
fi x xi
1 4 4
2 6 _______
3 12 _______
4 8 _______
  N = _________ ∑fixi =  ______

Mean `bar "x"` = `square/"N"`

= `square/square`
= `square`
∴ The average number of trees planted `square`
 
 
 
 

Solution

No. of saplings
(Scores) xi
No. of students
(frequncy) fi
fi×xi
1 4 4
2 6 = 2 x 6 = 12
3 12 = 3 x 12 = 36
4 8 = 4 x 8 = 32
  N = 30 ∑fixi= 84 

Mean `bar "x"` = `(sum f_ix_x)/ "N"`

= `84/30`

 = 2.8  

∴ The average number of trees planted 2.8 
  Is there an error in this question or solution?

APPEARS IN

 Balbharati Solution for Balbharati Class 8 Mathematics (2019 to Current)
Chapter 11: Statistics
Practice Set 11.1 | Q: 1 | Page no. 69
Solution The Following Table Shows the Number of Saplings Planted by 30 Students. Concept: Concept of Arithmetic Mean.
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