Lesson 8

Correlations

  • Let’s explore correlations

8.1: Notice and Wonder: Correlations

What do you notice? What do you wonder?

Scatter plot on grid. Ice cream sales, dollars. Temperature, degrees Fahrenheit.
Scatter plot on grid. Sweater sales, dollars. Temperature, degrees Fahrenheit.
Scatter plot on grid. Meals per day. Temperature, degrees Fahrenheit.

8.2: Variable Relationships

little girl in watermelon sun dress eating a slice of watermelon 
  1. For each pair of variables, do you expect there to be a relationship? That is, do you think a change in one variable is accompanied by a change in the other variable? How do you expect the second variable to change if the first variable is increased?
    1. hours of sleep and energy level
    2. length of hair and energy level
    3. number of school events each week and time spent watching videos online each week
    4. temperature and watermelon sales
  2. Some data is collected for each pair of variables listed and represented by a scatter plot. For each pair of variables, how do the scatter plots support or contradict your answers from the previous question?

    1. Scatter plot. Amount of energy. Hours of sleep.
    2. Scatter plot. Amount of energy. Length of hair, inches.
    3. Scatter plot. Time spend watching videos online, hours. Number of school events.
    4. Scatter plot. Watermelon Sales. Temperature, degrees Fahrenheit.

8.3: Card Sort: Correlations

Your teacher will give you a set of cards. Match each scatter plot with a pair of variables. Be prepared to explain your reasoning.

Summary