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The arithmetic mean of 10 observations i...

The arithmetic mean of 10 observations is 45. If one of the obsservations, 54, is deleted, then find the mean of the remaining observations.

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44
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PEARSON IIT JEE FOUNDATION-STATISTICS-Short Answer Type
  1. Find the median of the data 9, 12, 11, 10, 8, 9, 11.

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  3. Find the range of the data : 14, 15, 16, 18, 19, 25, 30, 41, 26, 16, 1...

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  4. When a coin is flipped once, what is the probability of getting HEAD ?

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  5. What is a pie chart ?

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  6. The marks obtained by 15 students in an examination are given below : ...

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  7. The heights of 7 students are given below (in cm) : 120, 126, 132.41, ...

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  8. The mode of the data 20, 23, 22, 23, 22, 20, x, 21 is 22. Find the val...

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  9. The arithmetic mean of 10 observations is 45. If one of the obsservati...

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  10. If the mean of 4, x, and y is 6, then find the mean of x, y, and 10.

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  11. A bar graph is drawn to the scale 1 cm = 4 xx x units .The length of t...

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  12. In a pie chart, a component is represented as a sector with sector ang...

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  13. If the mean of 2,3, x ,7 ,8 is x, then find the value of x .

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  14. Anand's income and expenditure are in the ratio 9 : 5. Find the centra...

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  15. In a bar graph, a bar of length 8.6 cm is represented by 430 units. Fi...

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  16. Find the mode of the data 2, 4, 6, 4, 6, 7, 6, 7 and 8.

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  17. The mean height of a group of 30 students is 150 cm. If a 150 cm tall ...

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  18. The mean of observations 2, 3, 4, 5, 8, 14, and x is x. Find x.

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  19. In a box, there are 20 marbles. Each marble is marked with a distinct ...

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  20. Find the mean of the data 7, 8, 10, 13, 17, 23, 30, 38, 47, and 57.

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