Question
Wheat and Barley cultivation started in which
year?Solution
The first time cultivation of crops started in around 7500 B.C. and first to be cultivated were wheat and barley.
The mean deviation from an average A will be minimum, if A represents:
 The standard error of the given data 15, 5, 12, 10, 20, 4 is
If the first, second, and third moment about the origin are 2, 8, and 18 respectively, then third moment about mean is
Let (Xi, I ≥ 1} be independent and identically distributed random variables with P(Xi =1) = p = 1-P(Xi = 0), Sn = ∑ni = 1 X i . The dist...
Which one is parameter from population?
Five persons A, B, C, D and E occupy seats in a row at random. The probability that A and B sit next to each other is:
Which of the following correctly completes the given statement?
Index number helps in:
(I) determining the cost of living
(II) ...
A physical instructor claims that the mean weight of students in school is greater than 82 kg with standard deviation 20. If a sample of size 81 studen...
If the first, fifth and ninth decile of frequency distribution xi ∣ fi are 3,10,16, respectively, then Kelly's coefficient of skewness is:
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