The frequency distribution of height of students of a class is given below:

Height (in cm)	Number of Students
160–162	12
162–164	15
164–166	24
166–168	13

What is the median height of the class?

What is the arithmetic mean of 8², 9², 10², …, 15²?

Let X be a random variable following binomial distribution whose mean and variance are 200…

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