Assume that a statistics professor has a height of exactly 161.7 cm. Assume that this height is
measured with a tape measure that can be read to the nearest mm
cm) and results from two
different measurements are reported as 162 cm and 161.1 cm. Which measurement is more
Which is more
Identify which measurement is more
The measurement of 161.1 cm is more
precise, because it has more decimal places.
Identify which measurement is more accurate, and explain why.
The measurement of 162 cm is more
accurate, because it is nearer to the true value.
The accompanying graph shows the minimum wage in a certain
together with its
which is adjusted for inflation with 1996 used as the reference year. The graph
represents the years from 1955 to 2011. Summarize what the graph shows.
The minimum wage has
steadily increased since 1955. The purchasing power of the minimum wage increased until the late
then decreased until the late
1980s, and has been relatively stable in recent years.
The following table gives the total area in square miles
of seven states.
Find the mean area and median area for these seven states. The mean is
the median is
Which of these seven states is an outlier on the high end? If you eliminate this state, what are the
new mean and median areas for this data set? State
2 is an outlier on the high end. The new
81,650 square miles.
The new median is
79,100 square miles.
Returning the outlier value from part
into the original data
which of these seven states is
an outlier on the low
If you eliminate this
what are the new mean and median areas
for this data
is an outlier on the low end. The new mean is
The new median is
The heights left parenthesis in centimeters right parenthesis of a sample of a species of plant 30
days after sprouting are shown below.