Question

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Solve This Maths Question,
Chapter: Data Handling--Mean , Class 7
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✦Find the mean of the Following Distribution.
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Correct answer with valid explanation will be marked as Brainliest. ​​

Answer 1

Step-by-step explanation:

⟶ We have, xᵢ =

• 12
• 13
• 14
• 15
• 16
• 17
• 18

Also fᵢ =

• 1
• 3
• 4
• 8
• 10
• 3
• 1

Mean will be:

⇛ Σxᵢfᵢ ÷ Σfᵢ

We have,

⟶ xᵢfᵢ :

• 12 × 1
• 13 × 3
• 14 × 4
• 15 × 8
• 16 × 10
• 17 × 3
• 18 × 1

That is,

• 12
• 39
• 56
• 120
• 160
• 51
• 18

(Add all)

Mean:

⟶ Σxᵢfᵢ ÷ Σfᵢ

⟶ 456 ÷ 30

∴ 15.2 is the mean of the distribution.

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