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If the mean of 2x, 2x + 3, 2x + 5, 2x + 7, 2x + 10 is 11, the mean of the last three observation is

A

10`1/3`

B

10`2/3`

C

13`1/3`

D

11`2/3`

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The correct Answer is:
C
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MTG IIT JEE FOUNDATION-STATISTICS-Exercise (Multiple Choice Question)
  1. The mean weight of 60 students of a class is 52.75 kg. If mean weight ...

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  2. Mean of 20 observations is 17. If observation 40 is replaced by 12, th...

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  3. Find the median of the following data 95, 65, 75, 70, 75, 100, 50, 40

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  4. Themodeofthedata 15, 14, 19,20, 14, 15, 16, l4, 15, 18, 14, 19, 15, 17...

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  5. The mean of first seventeen whole numbers is

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  6. If the mean of 2x, 2x + 3, 2x + 5, 2x + 7, 2x + 10 is 11, the mean of ...

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  7. Let barx be the mean of x1,x2,.....x3 and bary be the mean of y1,y2,....

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  8. The mean of the following data is 11. The value of p is

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  9. Find the mean of the following distribution:

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  10. Calculate the mode of the following data : 17, 10, 12, 11, 10, 15, 11,...

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  11. The scores (out of 25) of 9 students in a Monday test are 14, 25, 17, ...

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  12. Four coins were tossed 36 times simultaneously. Each time the numbe r ...

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  13. Find the mean of the of following distribution:

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  14. The mean of 12 values of a data is calculated as 19.25. If one more va...

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  15. Find the mode of the data : 14, 6, 9, 15, 14, 9, 21, 21, 25, 21, 27, ...

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  16. There are 50 numbers. Each number is subtracted from 53 and the mean o...

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  17. Find the missing frequency in the following distribution, if it is kno...

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  18. The monthly salaries of 50 workers in a factory are given below : ...

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  19. A batsman in his 10th inning makes a score of 48 runs and thereby incr...

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  20. The mean of 30 observations of a data was calculated 24.1. At a later ...

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