Advantages of systematic sampling ensure even coverage of an area and simplicity. Disadvantages include bias and risk of patterns or under-representation. Systematic sampling is useful for many types of research, including any research types that require looking at individuals, such as human, plant or animal research.Know More
Systematic research basically means picking a percentage of the population to sample, then coming up with a concrete way of choosing that percentage, such as every 10th individual. This is simple method of sampling, making it a good choice for basic research, new researchers or the first steps of more complicated research. When done correctly, this research style provides even area coverage, so theoretically the resulting samples are an accurate representation of the population.
However, with random sampling, it is always possible that the random individuals will not be an accurate representation of the whole population. For example, if every fifth house has four bedrooms, but all the ones in between have two, sampling every fifth house for bedroom number gives a biased result that does not represent the real population. This kind of accidental pattern or bias is a risky disadvantage of systematic sampling, and anyone who samples in this way has to come up with measures to counteract this inaccuracy.Learn more about Environmental Science
Advantages of using computers in education include increased access to information on the Internet and enhanced classroom experiences through the incorporation of visual media. Some disadvantages include the additional cost of purchasing computers, high infrastructure costs such as electricity, and exposure to negative or inappropriate information on social sites.Full Answer >
Wind energy is praised for being a renewable, nonpolluting source of electricity, but it can also produce intermittent streams of energy, and wind-generating equipment may be costly and troublesome to repair and maintain. One of the primary benefits of wind energy is that, unlike coal, oil and other fossil fuels, it does not emit toxic byproducts into the air and water.Full Answer >
One of the advantages of quota sampling is it helps create an accurate sample of the population when a probability sample cannot be obtained. Also, since quota sampling does not need a sampling frame or spelling techniques, it is easier and quicker to perform. A disadvantage is that it is difficult to see potential sampling errors.Full Answer >