http://www.ck12.org Chapter 8. Organizing and Displaying Data for Comparison
a. Who was right? How do you know?
b. Between what times did Brenda’s (pink) garden appear to grow more? How do you know?
c. Between what times were Ervin’s (blue) heights ahead of Brenda’s? How do you know?
a. Brenda (pink) is correct, because her plants grew more in the same amount of time.
b. Between 4 and 8 weeks, Brenda’s plants seemed to grow faster (taller) than Ervin’s plants. You can tell this,
because the pink line is above the blue line after the 4-week mark.
c. From 0 and 4 weeks, Ervin’s plants seemed to grow faster (taller) than Brenda’s plants. You can tell this, because
the blue line is above the pink line before the 4-week mark.
Example C
Nicholas and Jordan went on holidays with their families. They decided to monitor the mileage they traveled by
keeping track of the time and the distance they were on the road. The boys collected the following data:
NicholasTime (hr) 1 2 3 4 5 6
Distance (miles) 60 110 175 235 280 320JordanTime (hr) 1 2 3 4 5 6
Distance (miles) 50 90 125 125 165 210a. Draw a graph to show the trip for each boy.
b. What conclusions could you draw by looking at the graphs?
a.