266. Drawing a sample from each stratum in the proportion to latter’s share in the total population is called
(a) Stratified sampling
(b) Proportioned stratified sampling
(c) Disproportionate sampling
(d) Quota sampling
267. Selecting sample units in just a “hit and miss” fashion is called
(a) Convenience or Accidental sampling
(b) Purposive sampling
(c) Stratified sampling
(d) Proportionate sampling
268. A technique of Building up a list or a sample of a special population by using an initial set of members as informants is called
(a) Quota sampling
(b) Convenience Sampling
(c) Snow ball Sampling
(d) Purposive sampling
269. All the physical components of the computer are collectively called
(a) Software
(b) Hard ware
(c) Firm Ware
(d) Circuit
270. Computer operations are through ………….
(a) Binary digits
(b) Decimal
(c) Reminder
(d) Fraction
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