Scatterplots Warm Up

It can be shown that there is a correlation between ice cream sales and forest fires. In fact, ice cream sales tend to be the highest in months when forest fires are the worst. Which of the following statements is most likely true?

• There is a correlation here, and eating ice cream can cause forest fires.

• There is a correlation here, and forest fires cause ice cream sales to increase.

• There is a correlation here, but there is not a direct causal relationship between ice cream and forest fires.

• There is no correlation between ice cream sales and forest fires.

Which graph MOST clearly displays a set of data for which a linear function is the model of best fit?

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Which equation best models the data in the scatter plot?

• y = x + 8

• y = - x + 8

• y = x - 6

• y = - x - 6

Which lettered line represents the scatter plot's line of best fit?

• A

• B

• C

• D

Given the line of best fit y = 4x +10, where y is the amount of money you make baby sitting and x is the time in hours, determine how many hours you need to babysit to make $110.

• 20 hours

• 450 hours

• 25 hours

• 17.5 hours

For which variables would you most likely expect a negative correlation?

• Daily hours of study and test grades

• Distance from school and how long it takes to get to school

• Temperature and amount of ice cream eaten

• Driving speed and time it takes to reach a destination

Determine whether the situation describes a positive, negative or no correlation. The amount of flu shots given and the amount of people with the flu.

• Positive Correlation

• Negative Correlation

• No Correlation

Determine whether the situation describes a positive, negative or no correlation. The amount of coffee consumed and the number of t-shirts a person owns.

• Positive Correlation

• Negative Correlation

• No Correlation

In which of the following situations is there most likely to be correlation without causation?

• the number of cars manufactured at a car factory and the amount of metal used at the factory

• the number of letters in a person's name and the person's shoe size

• the number of people who work in an office building and the number of desks in the office building

• the number of cars in a city and the number of police officers in the city

Miko conducted a survey to determine the relationship between the shoe size of a person and their reading ability. Which of the following is the best description of the relationship between the variables in the survey?

• correlation without causation

• correlation and causation

• causation without correlation

• neither correlation nor causation