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Class 11 Maths Practice Test - Statistics
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Avg score: 87% • Most missed: “What is the mean deviation from the mean for the following data?”
Class 11 Maths Practice Test - Statistics
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7 Questions

1. What is the mean deviation from the mean for the following data?
117156206198223
2. What is the geometric mean of 5,52, ….,5n?
3. What is the geometric mean of 5,52, ….,5n?
4. Find the mean deviation about the median of the scores of a batsman given below.
InningsScores
120
256
30
484
511
6120

5. In a class there are 20 juniors, 15 seniors and 5 graduate students. If the junior averaged 65 in the midterm exam, the senior averaged 70 and the graduate students averaged 91, then what is the mean of the centre class approximately?
6. Find the mean deviation from mean of the observations: a, a+d, …., (a+2nd).
7. The mean deviation of an ungrouped data is 150. If each observation is increased by 3.5%, then what is the new mean deviation?

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