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IM Alg1.3.9 Lesson: Causal Relationships

Describe the strength and sign of the relationship you expect for each pair of variables. Explain your reasoning.

Used car price and original sale price of the car.

Used car price and number of cup holders in the car.

Used car price and number of oil changes the car has had.

Used car price and number of miles the car has been driven.

Each of the scatter plots show a strong relationship. Write a sentence or two describing how you think the variables are related.

During the month of April, Elena keeps track of the number of inches of rain recorded for the day and the percentage of people who come to school with rain jackets.

A school book club has a list of 100 books for its members to read. They keep track of the number of pages in the books the members read from the list and the amount of time it took to read the book.

Number of tickets left for holiday parties at a venue and noise level at the party.

The height and score on a test of vocabulary for several children ages 6 to 13.

Describe a pair of variables with each condition. Explain your reasoning.

Two variables with a causal relationship.

The variables are strongly related, but a third factor might be the cause for the changes in the variables.

The variables are only weakly related.

Look through news articles or advertisement for claims of causation or correlation.

Find 2 or 3 claims and read or watch the articles or the advertisement. Answer these questions for each of the claims. What is the claim?

What evidence is provided for the claim?

Does there appear to be evidence for causation or correlation? Explain your thinking

Choose the claim with the least or no evidence. Describe an experiment or other way that you could collect data to show correlation or causation.