Median is always central value even if the data is ________?

Class interval size is the different between the upper and lower class________ of a class?

What is the probability that a ball drawn at random from a jar?

In normal distribution u2 = S2 and u4 =________?

If x is 4 and the distribution is 2, 3, 4, 5, 6, the sum of squared deviations from the x will be________?

In a week the prices of a bag of rice were 350,280, 340, 290, 320, 310, 300. The range is________?