Scatter Plots Vocab

Trend Line

• A line on a scatter plot, drawn near the points, that shows a correlation

• A trend line that shows the relationship between two sets of data most accurately

• When y tends to increase as x increases in a relationship between two sets of data

• Estimating a value between two known values

Line of Best Fit

• A trend line that shows the relationship between two sets of data most accurately

• When y tends to decrease as x increases in a relationship between two sets of data

• A line on a scatter plot, drawn near the points, that shows a correlation

• Estimating a value between two known values

A graph of plotted points that shows the relationship between two quantitative variables

• Scatter Plot

• Cluster

• Outlier

• Quantitative Variable

What type of association does this graph have?

• positive 

• negative

• none

• all of the above

• As the age of the car increases, the asking price increases.

• As the age of the car increases, the asking price decreases.

• The age of the car does not affect the asking price.

• The asking price consistently decreased by $10,000 per year.

In a scatterplot, if the points do not show any discernible pattern, what can be inferred about the relationship between the two variables being compared?

• They have a strong relationship.

• They have a weak or no relationship.

• They have a perfect relationship.

• They have a negative relationship.

What does a scatterplot show?

• The exact values of two variables for a set of data

• The relationship between two variables

• The difference between the highest and lowest values in a dataset

• The average value of a dataset

Which would NOT likely be the variables represented on the scatter plot in #9?

• The number of miles driven and the gallons of gas used

• The number of students in a school and the number of unused lockers

• The number of items ordered at a restaurant and the cost of the bill

• The number of customers in a store and the length of the wait at the register

What is the trend for this scatter plot

• Negative

• Positive

• None

If the points on a scatterplot are moving upwards from left to right, what kind of relationship do the two variables have?

• No relationship

• A negative relationship

• A positive relationship

• A constant relationship