Given below are heights of 15 boys of a class measured in cm:
128, 144, 146, 143, 136, 142, 138, 129, 140, 152, 144, 140, 150,
142, 154.
Find
(a) The height of the tallest boy.
(b) The height of the shortest boy.
(c) The range of the given data.
(d) The median height of the boys.
The mean of three numbers is 10. The mean of other four numbers is 12. Find the mean of all the numbers.
A die was thrown 15 times and the outcomes recorded were
5, 3, 4, 1, 2, 6, 4, 2, 2, 3, 1, 5, 6, 1, 2
Find the mean, median and mode of the data
Classify the following events as certain to happen, impossible to
happen, may or may not happen:
(a) Getting a number less than 1 on throwing a die.
(b) Getting head when a coin is tossed.
(c) A team winning the match.
(d) Christmas will be on 25 December.
(e) Today moon will not revolve around the earth.
(f) A ball thrown up in the air will fall down after some time.
The letters written on paper slips of the word MEDIAN are put in a
bag. If one slip is drawn randomly, what is the probability that it
bears the letter D?
What is the probability that a student chosen at random out of
3 girls and 4 boys is a boy?
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