A laboratory instructor gives a sample of amino acids powder to each students,1,2,3and4,and they weigh the samples.The true. value is 8.72g.Their results for three trials are 1:8.72g,8.74g,8.70g 2:8.56g,8.77g,8.83g 3:8.50g,8.48g,8.51g 4:8.41g,8.72g,8.55g.(a)calculate the average mass from each of set of data,and tell which set is the most accurate.(b)precision is a measure of the average of the deviation of each piece of data from average value.which set of data is the most precise?is this set also the most accurate?(c)which set of data is both the accurate and most precise?(d)which set of data is both the least accurate and least precise?
2 answers
I'm a little confused here. Almost everyone knows how to calculate an average. Have you done that? If not, exactly what don't understand about the question. I shall be glad to help you but I don't want to do a lot of busy work you already know how to do.
(a): You can do that.
(b), (c), and (d): Google "accuracy vs. precision" and I think that will help you get on the right track.
(b), (c), and (d): Google "accuracy vs. precision" and I think that will help you get on the right track.
1 answer