Reliability and accuracy
Generally speaking reliability is concerned with the consistency of results and accuracy is how correct measurements are. It is effect by scale of equipments, for example results would not be accurate because in some galvanometer and ammeter, the needle scale positions...
Validity!
Validity
In general validity refers to whether the measurements you are taking are cause by the phenomena you are interested in. For the validity of conclusion, data and information gathered from secondary source from the internet website were valid by checking publisher...
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multimedia presentation attract to different audience, in this situation you need to adress what your addience need, for example primary school children audience require a bit colour and happy song to attract them. Further understanding about their attraction can be establish in...