Random Variable Classes Notes Questions with Answers PDF Download - 75

The class of variable which can accept only the values from set of integers is classified as

1. discrete random variable
2. continuous random variable
3. posterior random variable
4. interior random variable

If the total number of elements with some specific characteristics is 18 from a population of 40 and the sample is drawn without replacement with the size of 4 then the mean of hyper geometric probability distribution is

1. 4.8
2. 1.8
3. 2.8
4. 3.8

If the rate of occurrences in Poisson probability distribution is smaller and the occurrences have large numbers then the distribution tends to be

1. negatively skewed and mesokurtic
2. positively skewed and mesokurtic
3. symmetrical and leptokurtic
4. symmetrical and mesokurtic

In the classes of grouped data such as 10-15, 16-20, 21-25, 26-30 with respective frequencies of each class as 3, 5, 4, 3 then the range is

1. 5
2. 6
3. 15
4. 20

The measures which considers the mean or median to calculate average deviation does not includes

1. mean absolute deviation
2. standard deviation
3. variance
4. median deviation