Collection of Data - Online Test
Q1. An enquiry in which each unit of the universe is studied is called _______.
Answer : Option D
Explaination / Solution:
This method is popularly known as Census Method used for collecting data from each and every unit of the population.
Q2. Which of the following is the method of Unrestricted random sampling?
Answer : Option B
Explaination / Solution:
In this method, each unit have an equal probability/chance of getting selected, hence the sampling is unrestricted as well as random
Q3. The first census of free India was conducted in _____.
Answer : Option C
Explaination / Solution:
Although the Census,1951, was 9th census of India but it is the first census after independence.
Q4. Sampling in which every item of the population has an equal and independent chance of being selected is called
Answer : Option D
Explaination / Solution:
This method selects unit with equal probability and replacement. Because units are selected with replacement, a unit can be selected for the sample more than once.
Q5. Which sampling is also known as Judgment sampling
Answer : Option A
Explaination / Solution:
It is a type of non random sampling in which selection is based on the opinion of an expert.
Q6. Cluster sampling means
Answer : Option D
Explaination / Solution:
The divided groups are known as clusters
Q7. Sampling scheme where the units constituting the sample are selected at regular interval after selecting the very first unit at random with equal chance is called
Answer : Option A
Explaination / Solution:
If a researcher wanted to create a systematic sample of 1,000 students at a university with an enrolled population of 10,000, he or she would choose every tenth person from a list of all students.
Q8. Under stratified sampling population is divided into a number of sub-populations is called
Answer : Option D
Explaination / Solution:
After forming stratas, final subjects are selected randomly from thoes stratas.
Q9. Which of the following is the difference between primary and secondary data?
Answer : Option D
Explaination / Solution:
Since primary data is collected by the investigator according to his/her objectives, the data is more reliable than secondary data.
Q10. The law based on theory of probability is
Answer : Option A
Explaination / Solution:
This law has emerged from the mathematical theory of probability. The pith and substance of this law is that the behavior of an individual event may be erratic and imponderable but when a large number of events of same category are considered, a stable behavior emerges.
