Following frequency distribution given the weights of 38 students of a class:

Find the probability that weight of a student in the class is:

The distribution below gives the weights of 30 students of a class.Find the median weight of the students.

Consider the frequency distribution table (Table 14.3, Example 4, Chapter 14), which gives the weights of 38 students of a class. (i) Find the probability that the weight of a student in the class lies in the interval 46-50 kg. (ii) Give two events in this context, one having probability 0 and the other having probability 1.

Following frequency distribution gives the weights of 38 students of a class : Based on the above information, answer the following questions. Define an event whose probability is 1.

Find the mean weight of 20 students in your class.

Following frequency distribution gives the weights of 40 students of a class . A student from the class is chosen at random . What is the probability that the weight of the chosen student is (i) at most 60 kg (ii) at least 56 kg (iii) not more than 50 kg ?

Find the mean of the frequency distribution: (ii) The weight of 40 students of class IX are given below:

Consider the following frequency distribution of the height of 60 students of a class: The upper limit of the median class in the given data is: