Scatter plots

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.

Tags

CCSS.8.SP.A.1

Front

What does the slope of a line represent in a scatter plot?

Back

The slope of a line in a scatter plot represents the rate of change between the two variables. It indicates how much one variable changes for a unit change in the other variable.

Tags

CCSS.8.EE.B.5

Front

How do you calculate the slope between two points (x1, y1) and (x2, y2)?

Back

The slope (m) is calculated using the formula: m = (y2 - y1) / (x2 - x1).

Tags

CCSS.8.EE.B.5

Front

What is a positive correlation in a scatter plot?

Back

A positive correlation occurs when an increase in one variable corresponds to an increase in the other variable, resulting in a line that slopes upwards.

Tags

CCSS.HSS.ID.B.5

Front

What is a negative correlation in a scatter plot?

Back

A negative correlation occurs when an increase in one variable corresponds to a decrease in the other variable, resulting in a line that slopes downwards.

Tags

CCSS.HSS.ID.B.5

Front

What does it mean if there is no correlation in a scatter plot?

Back

No correlation means that there is no discernible relationship between the two variables; the data points do not follow a clear pattern.

Tags

CCSS.HSS.ID.B.5

Front

What is the y-intercept of a line?

Back

The y-intercept is the point where the line crosses the y-axis, indicating the value of y when x is zero.

Front

How can you find the y-intercept from the equation of a line?

Back

In the equation y = mx + b, the y-intercept is represented by b.

Tags

CCSS.8.F.A.3

CCSS.8.EE.B.6

Front

What is the x-intercept of a line?

Back

The x-intercept is the point where the line crosses the x-axis, indicating the value of x when y is zero.

Front

How do you find the x-intercept from the equation of a line?

Back

To find the x-intercept, set y to zero in the equation and solve for x.