State which of the following variables are continuous.

State which of the following variables are continuous and which are discrete:

(I) marks scored (out of 50) in a test.
(ii) daily temperature of your city.
(iii) sizes of shoes.
(iv) distance travelled by a man.
(v)time.

Solution:

(i) Discrete
(ii) Continuous
(iii) Discrete
(iv) Continuous
(v) Continuous

Using class intervals 0-4, 5 -9, 10-14, …. construct the frequency distribution for the following data :
13, 6, 10, 5, 11, 14, 2, 8, 15, 16, 9, 13, 17, 11, 19, 5, 7, 12, 20, 21, 18, 1, 8, 12, 18.

Solution:

The frequency distribution for the following data is