1.43 Watch those scales! Figures 1.18(a) and 1.18(b) both show time plots of tuition charged to in-state students from 1980 through 2015.33 (a) Which graph appears to show the biggest increase in tuition between 2000 and 2015? (b) Read the graphs and compute the actual increase in tuition between 2000 and 2015 in each graph. Do you think these graphs are for the same or different data sets? Why? $10,000+ $9,000- $8,000- $7,000 $6,000- $5,000- $4,000- In-state tuition $3,000- $2,000 1980 1990 2000 2010 2020 Year (a) FIGURE 1.18 Time plots of in-state tuition between 1980 and 2015, for Exercise 1.43. $14,000- $12,000 $10,000- $8,000- $6,000 In-state tuition $4,000 $2,000 $0 1980 1990 2000 2010 2020 Year (b)