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?
Only (1)
Only (2)
Only (1) and (2)
(1), (2) and (3)
A group of 10 boys are randomly divided in to two teams containing 5 boys each. The probability that the two tallest boys in different team is
A and B stand in ring along with 10 other persons. If the arrangement is at random, the probability, that there are
exactly 3 person between A and B, is
A and B are events such that
A = B
P(A) = P(B)
A and B are independent
All of the above
Three houses are available in a locality. Three persons apply for the houses. Each applies for one house without consulting others. The probability that all the three apply for the same house, is
If in a frequency distribution the mean and median are 21 and 22 respectively, then its mode is approximately
24.0
25.5
20.5
22.0
Twenty five coins are tossed simultaneously. The probability that the fifth coin will fall with head upwards is
None of these
A pack of playing cards was found to contain only 51 cards. If the first 13 cards which are examined are all red, Then
the probability that the missing card is black , is
One Indian and four American men and their wives are to be seated randomly around a circular table. Then the
conditional probability that the Indian man is seated adjacent to his wife given that each American man is seated
adjacent to his wife, is
The marks of some students were listed out of 75. The SD of marks was found to be 9. Subsequently the marks were raised to a maximum of 100 and variance of new marks was calculated. The new variance is
81
122
144
