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Sampling is used in data analysis primarily to make the data collection process more manageable, especially when dealing with large datasets. Collecting data from an entire population can be expensive, time-consuming, and complex. Sampling allows analysts to select a subset of the population that represents the whole. By carefully choosing a sample that reflects the diversity and characteristics of the population, analysts can make accurate inferences without the need for complete data collection. Proper sampling techniques help reduce the complexity of data analysis while maintaining its reliability and validity. Why Other Options Are Incorrect: • A: Collecting all possible data points (census) is not always practical or necessary. Sampling provides a good approximation without needing to collect every data point. • C: Sampling still requires statistical testing to ensure that the sample is representative and that conclusions are valid. • D: A sample cannot guarantee 100% accuracy, but it can provide insights that are statistically significant. • E: Sampling does not inherently exclude irrelevant data; it focuses on a representative subset of the data.
A and B invested Rs.2x and Rs.2400 in a scheme at simple interest at 8% p.a. The investment time of B is 1 year more than that of A.The ratio of interes...
Arjun made two investments: the first was Rs. 1,600 at an annual simple interest rate of R% for a period of 2 years, and the second was Rs. 2,000 at an ...
Rs. 2,800 increases to Rs. 3,640 in 4 years at a simple interest rate of r% per annum. If Rs. 7,000 is put at 2r% per annum for 1 year, how much interes...
A person invested a total of Rs. 50,000 in two different schemes. One scheme offers simple interest of 8% p.a., and the other sch...
The interest received by investing Rs. 4500 for 2 years at compound interest of 20% p.a., compounded annually, was re-invested for 3 years at simple int...
A man invested Rs. 'C' at simple interest of 20% and Rs. 'C + 2000' at simple interest of 16% p.a., for 3 years each. If the interest earned from both i...
A certain sum of money becomes 5 times of itself in 25 years at simple interest. In how many years does it become double of itself at the same rate of s...
The interest earned when a sum is invested at simple interest of 25% p.a., for 3 years, is Rs. 9000. What will be the total amount received after 2 year...
If the ratio of the sum invested and simple interest received after 1 year is 20:9 respectively, then find the rate of interest.
Vishal has certain sum of money with him. He invested 80% of the sum in scheme ‘X’ offering 15% p.a. simple interest for 8 years and received Rs. 27...