Average Monthly Temperature
Month Temperature
January 45 degrees
February 42 degrees
March 54 degrees
April 62 degrees
May 78 degrees
June 85 degrees
July 92 degrees
August 94 degrees
September 89 degrees
October 78 degrees
November 65 degrees
December 54 degrees
The average monthly temperatures for the city of Mathville are given in the chart above. One year, January's average temperature was 7 degrees warmer, February's was 3 degrees cooler, June's was 2 degrees cooler, August's was 3 degrees warmer, and November's was 7 degrees warmer. What did this do to the average yearly temperature?
A) The average remained the same.
B) The average increased by 1°.
C) The average decreased by 1°.
D) The average increased by 17°.