Measures of Dis...

Which measure of dispersion can be calculated in case of open end intervals?

If each value of a series is multiplied by $$15$$, the coefficient of variation will be increased by ______.

The mean of $$100$$ observations is $$18.4$$ and sum of squares of deviations from mean is $$1444$$, the Co-efficient of variation is _______.

The standard deviation of $$5$$ items is found to be $$15$. What will be the standard deviation if the values of all the items are increased?

The mean and S.D of $$ 13, 13, 13, 13$$ are respectively  ______.

The standard deviation of a set of $$50$$ items is $$8$$, what is the standard deviation, if each item is multiplied by $$2$$?

The average of the sum of squares of the deviation about mean is called ________.

Quartile deviation is equal to _______.

If each value of a set is divided by a constant 'd', the co-efficient of variation will be ________.

Each outcome of a random experiment is called ______.