STAT MEASURES

Question 1

viewed as the most common
value (the outcome) you would
expect from a measurement
(the event) performed
repeatedly

Answer 1

MEAN

Question 2

Symbol of -Mean, Population, Arithmetic Mean, Number of measurements, Sum of all measurements.

Answer 2

-x Exi, n, u

Question 3

Represents the spread (the dispersion)
of the repeated measurements on
either side of the mean

Answer 3

Variance

Question 4

s2, Q2

Answer 4

Sample, Population

Question 5

also provides a measure of the spread of
repeated measurements on either side of
the mean

Answer 5

Standard
deviation
(σ, s)

Question 6

An advantage of the standard deviation
over the variance is that its units are the
same as those of the measurement

Answer 6

Standard
deviation
(σ, s)

Question 7

used to compare the precision of
results which have different units or
magnitudes

Answer 7

relative
error -

Question 8

provide estimates of
the population values

Answer 8

sample mean, standard deviation, and variance

Question 8

The standard deviation also allows you to
determine how many significant figures
are appropriate when reporting a mean
value.

Answer 8

Standard
deviation
(σ, s)

Question 9

coefficient of variation

Answer 9

is equal to the
standard deviation, divided by the mean.