The numbers (in thousands) of charter schools are described by the bar graph in Fig. 140 for various years.

a. Why is the graph in Fig. 140 misleading?
b. Construct a time-series plot of the data. Explain why this graph is not misleading.
c. If someone does not look carefully, which graph makes it seem like the number of charter schools is increasing by greater and greater amounts, the bar graph or the time-series plot? Explain.
d. Estimate the number of charter schools in 2013.
e. Estimate how much the number of charter schools increased from 2003 to 2013. If it increases by the same amount from 2013 to 2023, what would the number of charter schools be in 2023? Do you have much faith that this prediction will turn out to be true? Explain.

Transcribed Image Text:

Charter Schools 2003 2004 2006 2009 Year