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3. Data Handling
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Q1 of 47 Page 86

Find the mean of 2, 4, 6, 8, 10, 12, 14, 16.

GIVEN: Values-2, 4, 6, 8, 10, 12, 14, 16


FORMULA USED: Arithmetic mean =


Number of values = 8


Sum of values = 2 + 4 + 6 + 8 + 10 + 12 + 14 + 16


= 72


Arithmetic mean =


Arithmetic mean = = 9


CONCLUSION: Arithmetic Mean of given values is 9


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Mr. Rajan Babu spends 20% of his income on house rent, 30% on food and 10% for his children’s education. He saves 25%, while the remaining is used for other expenses. Make a pie chart exhibiting the above information.

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If the average of the values 18, 41, x, 36, 31, 24, 37, 35, 27, 36, is 31. Find the value of x.

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If in a class of 20 students, 5 students have scored 76 marks, 7 students have scored 77 marks and 8 students have scored 78 marks, then compute the mean of the class.

Questions · 47
3. Data Handling
1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 3 3 3 3 4 4 4
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