XI_Maths_Statistics_1 Online Test

Karl-Pearson’s coefficient of skewness of a distribution is 0.32. Its S.D. is 6.5 and mean 39.6. Then the median of the distribution is given by ____.
28.61
38.81
29.13
28.31
Which one of the following measures of marks is the most suitable one of central location for computing intelligence of students?
Mode
Arithmetic mean
Geometric mean
Median
The central value of the set of observations is called ____.
Mean
Median
Mode
G.M.
Which of the following, in case of a discrete data, is not equal to the median?
50th percentile
5th decile
2nd quartile
Lower quartile
For a symmetrical distribution  and , the median is ____.
20
25
35
None of the above
A set of numbers consists of three 4’s, five 5’s, six 6’s, eight 8’s and seven 10’s. The mode of this set of numbers is ____.
6
7
8
10
Consider the following statements 1) Mode can be computed from histogram 2) Median is not independent of change of scale 3) Variance is independent of change of origin and scale Which of these is/are correct?
(1), (2) and (3)
Only (2)
Only (1) and (2)
Only (1)
The mean deviation of the numbers 3, 4, 5, 6, 7 is ____.
0
1.2
5
25
For a normal distribution if the mean is M, mode is  and median is , then ____.
If 25% of the item are less than 20 and 25% are more than 40, the quartile deviation is ____.
20
30
40
10
Description:

This test consist of 10 questions.Students should ideally take 10 minutes to complete the test. This test is useful for those students who are preparing for IIT JEE, AIEEE or any other engineering entrance test. This test cosist of questions from Statistics which, in general, is focused in AIEEE and IIT JEE. Last year 3 questions was asked from this chapter in AIEEE. In Statistics, deviations and variance are key topics and mostly application based questions are asked.

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