Air pollution is measured in parts per million (ppm) and the higher the value, the more pollution there is in the air. stephen is completing research for his senior project and records the amount of pollution in the air each day for two weeks. his results are show and the higher the value, the more pollution there is in the air. stephen is completing research for his senior project and records the amount of pollution in the air each day for two weeks. his results are show in this stem and leaf plot below.

stem and leaf
0_5,7,9
1_2,2,6,7
2_0,4,8
3_1,2,5,9

a. calculate the mean, median and mode of the data represented in the plot. show and explain your work.

b. another student created the box and whisker plot shown below incorrectly. explain where the error exists and what the correct answer should be. (picture included)

c. describe which quartile has the largest range. show or explain your work.

d. describe why this statement is false.
“ 75% of the days had 20 or more parts per million of pollution.”

correct statement: