What is the equation of the circle which touches both the axes in the first quadrant and the line y − 2 = 0?

If P(E) denotes the probability of an event E, then E is called certain event…

Let X and Y be two related variables. The two regression lines are given by…

Which one of the following is a measure of dispersion ?

What is the standard deviation of 7, 9, 11, 13, 15 ?

If the mean of few observations is 40 and standard deviation is 8, then what…