Introduction

Scatter Plots and Relationships

Scatter plots are basically like relationships. You can either like, dislike, or not know the person.

There are 3 types of scatter plots:

  1. Positive: As one goes up, so does the other.
  2. Negative: As one goes up, the other goes down.
  3. No Relationship: There isn't a relationship

Before we look at scatter plots, try your luck with the following questions.

Review

Tell whether you think there is a positive relationship, negative relationship, or no relationship between the two items in each question.

  1. A person's height and the number of letters in their name.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: c. No relationship

  2. The shoe size and the salary of a teacher.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: c. No relationship. If so, a lot of teachers would be getting bigger shoes!

  3. The time you study on a test and the score you receive.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: a. Positive. The more you study, the better you'll do and the higher your score will be.

  4. The amount of people painting a room and the total time it takes to paint.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: b. Negative. The more people you have painting will decrease the total time it takes to paint everything.

  5. The more education you have and the money you make.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: a. Positive. Data supports the fact that the more education you have, the higher your salary.

  6. The amount of money you have and how much you can buy when you go shopping.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: a. Positive

  7. The size of the vehicle and gas mileage.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: b. Negative

  8. The number of mailboxes and the number of cats in town.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: c. No relationship

  9. The temperature and the pressure in a tire.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: a. Positive. Pay attention to car tires when the temperature changes. As the temp drops, the tire pressure also drops.

  10. The amount you spent on the computer and your grade in this class.
    1. Positive
    2. Negative
    3. No Relationship

    Answer: a. Positive. In your online ACCESS classes, the more time you spend on the computer learning, the better your grade! And make sure you do all of your assignments!