Statistical Analysis (Exp. 1)

Question 1

difference between the highest and the lowest values in a set of measurements

Answer 1

range

Question 2

range expressed in relative terms

Answer 2

relative range

Question 3

range divided by the mean multiplied to 1000

Answer 3

relative range

Question 4

average of the individual deviations from the mean, divided by the mean

Answer 4

average deviation

Question 5

used for obtaining scatter due to random error

Answer 5

variance

Question 6

square root of variance

Answer 6

standard deviation

Question 7

relative value of SD

Answer 7

coefficient of variance

Question 8

this is done by dividing the standard deviation to the sample mean and multiplying it to 100

Answer 8

coefficient of variance

Question 9

relative value of SD multiplied by 1000

Answer 9

relative standard deviation

Question 10

provides measure of the uncertainty associated with the central result

Answer 10

measures of central tendency

Question 11

provides measure of the uncertainty associated with the central value obtained

Answer 11

measures of precision

Question 12

defined as the closeness of the results or the reproducibility of measurements

Answer 12

precision

Question 13

provides the measure of the closeness to the true value and is expressed as error

Answer 13

accuracy

Question 14

difference between the measured value and the true value

Answer 14

absolute error

Question 15

absolute error is divided to the true value multiplied by 100 or 1000

Answer 15

relative error

Question 16

higher variation indicates…

Answer 16

greater level of dispersion around the mean

Question 17

higher standard deviation means…

Answer 17

values are far from the mean

Question 18

indicates the closeness of the
measurement to its true or accepted value
and is expressed by the error

Answer 18

accuracy