# What does a scatter plot tell you?

**Scatter plots**are similar to line graphs in that they use horizontal and vertical axes to

**plot**data points. However, they have a very specific purpose.

**Scatter plots**show how much one variable is affected by another. The relationship between two variables is called their correlation .

A.

### How do you describe the association?

No

**association**: Hard to find a pattern showing a relationship between the variables. STEP 1: Make a scatterplot;**describe**the form, direction and strength of the relationship. Before doing the scatterplot you need to decide which variable is the explanatory variable and which is the response variable.#### What is a negative association?

**Negative correlation**is a**relationship**between two variables in which one variable increases as the other decreases, and vice versa. In statistics, a perfect**negative correlation**is represented by the value -1.00, a 0.00 indicates no**correlation**, and a +1.00 indicates a perfect positive**correlation**.#### What is an example of a scatter plot?

**Scatter Plots**. A**Scatter**(XY)**Plot**has points that show the relationship between two sets of data. In this**example**, each dot shows one person's weight versus their height. (The data is plotted on the**graph**as "Cartesian (x,y) Coordinates")#### What is negative association in math?

A**negative correlation**is a**relationship**between two variables such that as the value of one variable increases, the other decreases.**Correlation**is expressed on a range from +1 to -1, known as the**correlation**coefficent.

B.

### What is a positive association?

**Positive correlation**is a

**relationship**between two variables in which both variables move in tandem. A

**positive correlation**exists when one variable decreases as the other variable decreases, or one variable increases while the other increases.

#### What is positive and negative association?

Recall,**Positive**/**Negative Association**: • Two variables have a**positive association**when the values of one variable tend to increase as the values of the other variable increase. • Two variables have a**negative association**when the values of one variable tend to decrease as the values of the other variable increase.#### What does it mean to have a negative association?

A**negative correlation is**a**relationship**between two variables such that as the value of one variable increases, the other decreases.#### What is a no association?

A perfect positive**association**means that a**relationship**appears to exist between two variables, and that**relationship**is positive 100% of the time. In statistics, a perfect positive**association**is represented by the value +1.00, while a 0.00 indicates**no association**.

Updated: 2nd October 2019