Finding the Mean and Median Using Technology
Year
The table shows the precipitation in December, in
inches, for Washington state from 2005 to 2013. What
was the mean amount of precipitation during this
time? Round to the nearest hundredth.
2005
2006
2007
Precipitation
5.98
6.05
7.59
5.27
3.11
7.18
2008
O 1.97 inches
O 2.61 inches
O 5.33 inches
O 5.98 inches
2009
2010
2011
2012
2.95
7.22
2.61
2013

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality