350990
Descripción
Fichas por lovelylaw2, actualizado hace más de 1 año
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Creado por lovelylaw2
hace más de 10 años
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| Pregunta | Respuesta |
| What is primary sources of data? | Primary sources of data is data that has been collected for a specific purpose by asking people directly for information that is needed. |
| Give examples on how to get primary sources of data. | -Hand out and collect a questionnaire -hold an interview For example, a dairy might employ people to stand in a high street and interview people about their preferences for different types of cheeses or butters and records the data |
| What do you have to consider when designing a questionnaire? | -The phrasing of questions -Closed or open questions -What information you need |
| What are secondary sources of data? | Is data that has already been collected previously and been published. |
| Give examples of secondary data. | -On the internet -in books -reports -magazines -newspapers |
| What are the pros and cons of using secondary data? | The pros are that you can... - buy published market research to save time -it can help get more data to develop your products The cons are.... -the results may not be helpful to the people who need it -May be old and therefore unreliable -trends may change -could result in loss of business and less profit if data is wrong -may be in a different locations |
| What are input devices? Give examples | Input devices that help store and analyse data that needs to be on a computer. These include keyboards, mice, scanners, cameras and voice recognition devices. |
| What are the pros and cons of input devices? | Pros; -A range allows different types of information to be documented e.g. photos, text, graphs -most simply connect with USB cable Cons; -Could be costly if they don't consider what is necessary/if it will be used -Keyboards can cause repetitive strain injury causing workers to be unhappy -If they don't check the device is suitable for the one using it (e.g. for the visually impaired) then it will waste money and reduce morale. |
| What are storage devices? Give examples | Storage devices are devices that store information on the computer. For example hard disks or drives, CDs, DVD's and USB memory sticks. |
| What are the pros and cons of storage devices? | Pros; -Removable hard drives can increase the size of the data a computer can hold and can back up data so it would not be lost. -CDS can hold a variety of information (Text, pictures, archives of photos. -Memory sticks are cheap and make data portable Cons; -Memory sticks are venerable to damage -All external devices need to be backed up regularly as they could be damaged or lost resulting in a waste of time and data |
| What are output devices? give examples. | Are devices that take data off the computer in order for it to be used. This includes monitors, printers and projectors. |
| What are the pros and cons of output devices? | Pros; -TFT screens have lower environmental impact and take up less room -printers can print in colour and black and white so they have multiple uses -some projectors can be portable/moving Cons; -Medical and safety issues need to be taken into consideration e.g. screens need to have a low flicker rate and be fully adjustable. -poorly chosen printers could result in a very expensive bills -Unsuitable devices for presentations could result in a loss of business |
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