Question

2, 0,6, 4, 3,
4, 5,/7, 6, 4, 3, 5, 4, 4, 7,
Prepare a frequency distribution table of the data.
he value of n upto 50 decimal places is given below :
41392658589793238462643383279502884197169399
m this information prepare an ungrouped frequency
earing after the decimal point.
118​

Answer 1

Answer:

. Give five examples of data that you can collect from your day-to-day life.

Sol. Following are five examples which are related to day-to-day life.

(i) Number of girl students in our class.

(ii) Number of computer sets in our computer-lab.

(iii) Telephone bills of our house for last two years.

(iv) Number of students appeared in an examination, obtained from newspapers.

(v) Number of female teachers in all the schools in a state obtained from the education department.

2. Classify the data in Q. 1 above as primary or secondary data.

Sol. We have:

Primary data: (i), (ii) and (iii)

Secondary data: (iv) and (v)

EXERCISE 14.2

1. The blood groups of 30 students of Class VIII are recorded as follows:

A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O,

A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O.

Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group among these student?

Sol. A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O.