Statistics & Probability
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Q. If the scores of a student in five subjects are 70, 80, 90, 100, and 60, what is the median score?
Q. If the standard deviation of a data set is 0, what can be said about the data?
Q. If the standard deviation of a data set is 3, what is the variance?
Q. If the standard deviation of a data set is 4, what is the variance?
Q. If the standard deviation of a data set is 5, what is the variance?
Q. If the variance of a data set is 16, what is the standard deviation?
Q. If two coins are tossed, what is the probability of getting at least one head?
Q. If two dice are rolled, what is the probability of getting a sum of 7?
Q. In a bag containing 3 red, 2 blue, and 5 green balls, what is the probability of drawing a blue ball?
Q. In a bag of 10 balls, 4 are red and 6 are blue. What is the probability of picking a red ball?
Q. In a box of 10 balls, 4 are red and 6 are blue. What is the probability of picking a red ball?
Q. In a box of 100 balls, 30 are red, 50 are blue, and 20 are green. What is the probability of picking a red ball?
Q. In a box, there are 5 white and 3 black balls. If a ball is drawn and it is black, what is the probability that the next ball drawn is white?
Q. In a class of 30 students, 18 are boys and 12 are girls. If a student is selected at random, what is the probability that the student is a girl given that the student is not a boy?
Q. In a class of 30 students, 18 are boys and 12 are girls. If a student is selected at random, what is the probability that the student is a girl?
Q. In a class of 30 students, 18 are boys and 12 are girls. What is the probability of randomly selecting a girl?
Q. In a class of 30 students, 18 are boys. What is the probability of randomly selecting a girl?
Q. In a class of 30 students, 18 are girls. If a student is selected at random, what is the probability that the student is a girl?
Q. In a class of 30 students, the marks obtained are as follows: 45, 50, 55, 60, 65. What is the median?
Q. In a class of 30 students, the marks obtained are as follows: 45, 50, 55, 60, 65, 70, 75, 80, 85, 90. What is the median?
Q. In a class of 40 students, 25 are girls and 15 are boys. If a student is selected at random, what is the probability that the student is a boy given that the student is not a girl?
Q. In a class of 40 students, 25 are girls. What is the probability of selecting a boy?
Q. In a class of 40 students, 25 are taking Mathematics, 15 are taking Physics, and 10 are taking both. What is the probability that a student is taking Physics given that they are taking Mathematics?
Q. In a class of 5 students, their scores are 10, 20, 30, 40, and 50. What is the median score?
Q. In a class of 5 students, their scores are 12, 15, 18, 20, and 25. What is the median score?
Q. In a class of 5 students, their scores are 12, 15, 20, 25, and 28. What is the median score?
Q. In a class of 5 students, their scores are 80, 90, 70, 85, and 95. What is the median score?
Q. In a data set, if the mean is 30 and the median is 25, what can be inferred about the data?
Q. In a data set, if the mean is 30 and the median is 25, what can be inferred?
Q. In a data set, if the mean is 50 and the median is 45, what can be inferred about the data?
