Most commonly used index numbers are _________ index number

(a)

diffusion

(b)

price

(c)

value

(d)

none of these

Chance variation in the manufactured product is __________

(a)

controllable

(b)

not controllable

(c)

both (a) and (b)

(d)

none of these

Variation due to assignable causes in the product occur due to, _____

(a)

faulty process

(b)

carelessness of operators

(c)

poor quality of raw material

(d)

all the above.

The causes leading to vast variation in the specification of a product are usually due to _____

(a)

random process

(b)

assignable causes

(c)

non-traceable causes

(d)

all the above

Most frequently used index number formulae are_____

(a)

weighted

(b)

unweighted

(c)

fixed weighted

(d)

none of these