A _______ is a collection of numbers gathered to give some meaningful information.

Collection of numbers to give some information is called ________ .

Examples of data are given below : 1. Information on households collected by an investigator by door-to-door visits. 2. Data on the percentage of literates, sex-wise, for the different districts of a state collected from records of the cenus of India. 3. General information about families, collected by telephonic interviews. Which of the following in respect of the above is correct ?

Which of the following collections is not a set ? (i) The collection of natural numbers between 2 and 20 (ii) The collection of numbers which satisfy the equation x^(2)-5x+6=0 (iii) The collection of prime numbers between 1 and 100 . (iv) The collection of all intelligent women in Jalandhar.