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 in Environmental Science
Advantages of commercial software include revenue provision, availability of full features, easy to implement, cheaper and reliable while the disadvantages are that they require annual fee payments, may not meet specific goals and their requirements depend on market research. Commercial software can force different groups to coalesce on data and format requirements because they follow the inputs and outputs of the purchased products.Full Answer >
Advantages of price discrimination include higher revenue, which in turn lets companies offering products invest in more research and development, ultimately improving their services, while disadvantages include limited consumer surplus and higher prices for many consumers.
Price discrimination refers to a pricing and retail tactic where companies charge consumers different prices for the same products depending on regional economic circumstances. This discrimination occurs in many settings, including electrical companies charging different rates for on-peak and off-peak hours and organizations offering discounted tickets for students and seniors.Full Answer >
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 >
Advantages of the method demonstration practice of teaching include the ability for participants to see, feel and participate directly in the learning process and the enhanced learning ability of those being instructed. Disadvantages of method demonstration include the risk of too many participants being involved and a potential shortage of time, resources and facility space, which limits the hands-on opportunities of the participants.Full Answer >