UNIT 9: Scatter Plots & Prediction- RETEST

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a strong positive correlation indicate?

Back

A strong positive correlation indicates that as one variable increases, the other variable also tends to increase.

Front

What does a strong negative correlation indicate?

Back

A strong negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

What is no correlation?

Back

No correlation means there is no discernible relationship between the two variables; changes in one do not predict changes in the other.

Front

How can you identify a positive association in a scatter plot?

Back

A positive association is identified when the data points trend upwards from left to right.

Front

How can you identify a negative association in a scatter plot?

Back

A negative association is identified when the data points trend downwards from left to right.

Front

What is a trend line in a scatter plot?

Back

A trend line is a straight line that best represents the data points in a scatter plot, showing the general direction of the data.

Front

How do you use a trend line to make predictions?

Back

You can use a trend line to estimate the value of one variable based on the value of another variable by finding where the value intersects the line.

Front

What is the purpose of using scatter plots?

Back

Scatter plots are used to visually represent the relationship between two variables and to identify patterns, trends, or correlations.

Front

What does it mean if a scatter plot has a weak correlation?

Back

A weak correlation means that the data points are spread out and do not closely follow a clear trend.