# Blame It on the Rain

### Resources for this lesson:

For a community service project, Andrew is gathering data on community safety to identify ways to keep the community safe.  The school resource officer has gathered county data on the number of arrests made this past month, which included the number of vehicle stops made, calls to residence, and other incidences (calls to businesses or shopping centers, general patrol, etc.).

Andrew organized the data to compare total arrests made to arrests made by vehicle stops:

Month

Total Number of Vehicle Stops

January

800

1500

February

673

1350

March

500

1100

April

475

1050

May

577

1200

June

600

1275

July

827

1650

August

810

1575

September

400

1000

October

300

900

November

525

1125

December

780

1400

Andrew makes the following conclusion: Vehicle stops trigger more arrests.

## Algebra II Journal: Reflection 1

Respond to the following questions in your Algebra II Journal and submit to your teacher.

• Evaluate Andrew’s conclusion. Decide if his statement is one of causation or correlation. Determine whether his conclusion is valid.  If his conclusion is not valid, revise the conclusion.
• How can you distinguish between statements of correlation and causation?
• What is a lurking variable?
• When is it acceptable to write a statement of causation?