Module 2

Question 1

accuracy

Answer 1

nearness to true value

Question 2

coefficient of variation

Answer 2

the standard deviation of a data set expressed as a percentage of the mean

Question 3

distribution histogram

Answer 3

the curve drawn when values of repeated analysis of a sample are plotted against the frequency of a particular value occuring

Question 4

gaussian or normal distribution

Answer 4

a distribution histogram in which there is symmetrical distribution around a central point

Question 5

mean

Answer 5

average of all values in a data set

Question 6

median

Answer 6

the middle number in a set of data arranged in increased numerical data

Question 7

mode

Answer 7

the value that occurs most frequently in a data set

Question 8

precision

Answer 8

reproducibility or closeness of repeated results

Question 9

range

Answer 9

the difference between he lowest and highest value in a data set

Question 10

standard deviation

Answer 10

the spread of values around the mean in a normal distribution
It is a calculation of the average distance the values are from the mean