Q4--Test 2--Scatter Plots and Trend Lines P1

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 trend line represent in a scatter plot?

Back

A trend line, or line of best fit, represents the general direction or pattern of the data points in a scatter plot.

Front

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

Back

Use the distance formula: Distance = √((x2 - x1)² + (y2 - y1)²).

Front

What is the Y-intercept in a linear equation?

Back

The Y-intercept is the value of y when x is 0, representing the starting point of the line on the y-axis.

Front

What does the slope of a trend line indicate?

Back

The slope indicates the rate of change of the dependent variable (y) with respect to the independent variable (x).

Front

What is the equation of a line in slope-intercept form?

Back

The equation is y = mx + b, where m is the slope and b is the Y-intercept.

Front

What does a positive slope indicate in a scatter plot?

Back

A positive slope indicates that as the independent variable increases, the dependent variable also increases.

Front

What does a negative slope indicate in a scatter plot?

Back

A negative slope indicates that as the independent variable increases, the dependent variable decreases.

Front

What is the purpose of a line of best fit?

Back

The line of best fit is used to summarize the relationship between variables and make predictions based on the data.

Front

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

Back

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