Selection bias occurs when certain individuals are more likely to be selected for a sample than others, leading to unrepresentative results. Random sampling with a well-defined sampling frame ensures that every individual in the population has an equal chance of being selected, thus minimizing bias. The sampling frame is a list of all individuals in the population, and using this frame with random sampling helps ensure the sample is unbiased and representative of the entire population. Option A is incorrect because selecting volunteers can introduce bias since volunteers are likely to have specific characteristics that differ from the general population. Option B is incorrect because relying on personal judgment introduces bias based on subjective decisions, which can distort the sample. Option D is incorrect because convenience sampling is highly prone to bias, as it selects individuals who are easiest to reach, which may not represent the entire population. Option E is incorrect because focusing only on individuals with particular interests introduces a bias related to the characteristics of the participants.
With which of the following was Sir Richard Strachey Commission related?
Consider the following statements regarding Jal Jeevan Mission.
1. It aims to provide piped drinking water to all rural households by 2024,
...Union Minister of Education launched a free mobile app called ______ , on 5 September 2020.
With reference to the ‘Samudrayaan Mission’, consider the following statements:
Which of the statements given above is/are correct?
Which of the following statement is true in regard of Flight Lieutenant Bhawana Kanth?
1. Bhawana Kanth is the first woman fighter pilot to take ...
In 1680, _________, son of Shivaji, ascended the throne after winning the war of succession against his brother Rajaram.
Which machine is used to accelerate charged particles or ions in high energy?
Who has been conferred with the Rajiv Gandhi Khel Ratna Award for the year 2018?
What was the distance (around in km) covered by the first-ever train between Bombay and Thane in 1853?
Which artists have won the Sangeet Natak Akademi Award for contribution to Chhau dance of Seraikella?