Scatter Plots and Trend Lines

Front

What is a scatter plot?

Back

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

Tags

CCSS.8.SP.A.1

Front

What does a trend line represent in a scatter plot?

Back

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

Tags

CCSS.8.EE.B.5

Front

What is positive correlation in a scatter plot?

Back

Positive correlation occurs when an increase in one variable leads to an increase in another variable, resulting in an upward trend.

Tags

CCSS.HSS.ID.B.5

Front

What is negative correlation in a scatter plot?

Back

Negative correlation occurs when an increase in one variable leads to a decrease in another variable, resulting in a downward trend.

Tags

CCSS.HSS.ID.B.5

Front

What does no correlation mean in a scatter plot?

Back

No correlation means there is no apparent relationship between the two variables, and the data points do not show any trend.

Tags

CCSS.HSS.ID.B.5

Front

How can you estimate the slope of a trend line?

Back

The slope of a trend line can be estimated by calculating the change in the y-values divided by the change in the x-values between two points on the line.

Tags

CCSS.8.EE.B.5

Front

What is the range of the correlation coefficient (r)?

Back

The correlation coefficient (r) ranges from -1 to 1, where -1 indicates a perfect negative correlation, 1 indicates a perfect positive correlation, and 0 indicates no correlation.

Tags

CCSS.HSS.ID.C.8

Front

What does a correlation coefficient of 0.6 indicate?

Back

A correlation coefficient of 0.6 indicates a moderate positive correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What is a strong negative correlation?

Back

A strong negative correlation means that as one variable increases, the other variable decreases significantly, and the data points are closely clustered around the trend line.

Tags

CCSS.HSS.ID.B.5

Front

What is a weak positive correlation?

Back

A weak positive correlation means that there is a slight upward trend, but the data points are more spread out and less closely clustered around the trend line.

Tags

CCSS.HSS.ID.B.5