(1) Findings are not completely accurate: The findings of sampling method are reasonably accurate but not completely accurate .The findings and conclusions drawn from sample survey may be comparatively less accurate compared with that available from the census technique in which the entire population is covered.
(2) Findings may not be reliable: The findings may notbe reliable if the sample selected is too small or is not adequately representative in character. In such cases the conclusions drawn may be misleading and this may affect the quality of research work.
(3) Difficulties in the selection of representative sample: There are many practical difficulties in the selection of representative sample. This may defeat the very purpose of sampling..
(4) Data collection difficult in the case of large sample: Data collection becomes difficult when large size sample is decided. This also leads to more time and money for data collection.
5 Comments