Lesson 8 — Activity 2: Using a Chart/Graph to Find Missing Information
Completion requirements
Lesson 8 — Activity 2: Using a Chart/Graph to Find Missing Information
Another way to solve a problem is by using a graph or a chart. You can do either one of two things once you have a graph.
Interpolation:
- This is where you estimate a value between two known values.
For
example, if you know 2 students will eat 4 hot dogs and 4 students will
eat 8 hot dogs, you can interpolate (estimate) that 3 students will eat 6
hot dogs.
Extrapolation:
- This
is where you estimate a value beyond known values. It usually involves
extending a graph beyond where it ends to solve for a missing piece of
information.
If you use the example above, you could
extrapolate that 5 students will eat 10 hotdogs. You have gone beyond
the information you know and using the information you had, made a
logical choice to answer the question.
- This is where you estimate a value between two known values.
- This is where you estimate a value beyond known values. It usually involves extending a graph beyond where it ends to solve for a missing piece of information.
If you use the example above, you could extrapolate that 5 students will eat 10 hotdogs. You have gone beyond the information you know and using the information you had, made a logical choice to answer the question.
