Maharashtra State BoardSSC (English Medium) 8th Standard
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The Following Table Shows the Number of Saplings Planted by 30 Students. - Mathematics

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Sum

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`
 
 
 
 
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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 
Concept: Arithmetic Mean - Raw Data
  Is there an error in this question or solution?
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APPEARS IN

Balbharati Mathematics 8th Standard Maharashtra State Board
Chapter 11 Statistics
Practice Set 11.1 | Q 1 | Page 69
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