Data Interpretation Set : Frequency Distribution Table

Directions ( Questions 1 to 3) : The questions given are based on the following table. Study the table carefully and  answer the questions.

I.Q. (x)	Classification	F % of population	Deviation d from A = 95 in term of 10	fd
135 125 115 105 95 85 75 65	Very superior Superior Bright normal Above average Average Dull normal Border line Mentally defective	2.1 6.2 16.0 20.2 29.8 16.2 7.2 2.3	4 3 2 1 0 -1 -2 -3	8.4 18.6 32.0 20.2 0 -16.2 -14.4 6.9
	Total	100.0		79.2-37.5 = 41.7

Ques 1. 

The average I.Q. of the population classified below'Average' is nearly
(a) 88.4
(b) 76.2
(c) 80.4
(d) None of these

Ans 1. Average I.Q. of the population classified below 'Average'

Ques 2.

The average I.Q. of the entire population is nearly
(a) 88.2
(b) 105.3
(c) 99.2
(d) None of these

Ans 2. Average I.Q. of the entire  population

Ques 3.

The ratio of the population classified below 'Average' to the total population,is nearly
(a) 1/3
(b) 1/8
(c)1/5
(d) 1/4

Ans 3. 

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