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Mean of 15 observations = 124
Median of 15 observations = 130
Since,
Mode = 3*median - 2*mean
= 3*130 - 2*124 = 390 – 248 = 142
The Mean deviation about Median for the given data.
52, 56, 66, 70, 75, 80, 82 is:
For the recorded observation, the coefficient of variation is 0.2 and the variance is 16. The arithmetic mean is:
At a round table, n persons are seated on n chairs. The probability that two friends from same college are sitting next to each other, is:
If the first, second, and third moment about the origin are 2, 8, and 18 respectively, then third moment about mean is
If first, second, and third moment about origin are 1, 6, and 15 respectively, then Karl Pearson beta coefficient of skewness β is
The median of following observations 8, 9, 10, 8, 8, 10, 8, 9 is
Which of the following is a sources of primary data?
Fundamental principles of design of experiment are
(I) Randomization
(II) Replication
(III) Local control
Which option is correct?
A Poisson distribution has a double mode at x = 1 and x = 2. The probability for x = 1 or for x = 2 of these two values is:
