Originally Posted by

**ifti_cs** **Q#01:** For the data given below 2,4,5,6,12,19,21,10,2 Calculate Lower quartile and median.

**Q#02:** Calculate coefficient of range for the data in 37,80,82,41,49,60,38,61,64,29.

Mr F asks: Where are you stuck? In each case you should order the data and then apply the definitions.

**Q#03:** A box contain 15 pencils of same shape and size, but with different colors, 3 of them are of black, 6 white, 2 red and 4 yellow. Two pencils are drawn at random.

Find the probability that: they are

(i) black or white

(ii) One red and other black

Mr F says: Have you tried drawing a tree diagram?