Scatterplots

Front

What is the slope-intercept form of a linear equation?

Back

The slope-intercept form of a linear equation is given by the formula y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you determine the slope of a line from a graph?

Back

The slope of a line can be determined by taking the rise (change in y) over the run (change in x) between two points on the line.

Front

What does a slope of 1/2 indicate about a line?

Back

A slope of 1/2 indicates that for every 2 units the line moves horizontally to the right, it moves 1 unit vertically up.

Front

What is a scatter plot?

Back

A scatter plot is a graph that displays values for typically two variables for a set of data, showing the relationship between them.

Front

What does a trend line in a scatter plot represent?

Back

A trend line in a scatter plot represents the general direction or pattern of the data points, helping to visualize the relationship between the variables.

Front

How can you use a trend line to make predictions?

Back

You can use a trend line to make predictions by extending the line to estimate values of one variable based on known values of the other variable.

Front

What is meant by 'no association' in a scatter plot?

Back

'No association' means that there is no discernible pattern or relationship between the two variables being plotted.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, minimizing the distance between the line and all data points.

Front

How do you identify the line of best fit on a scatter plot?

Back

The line of best fit can be identified by visually assessing which line minimizes the distance to the majority of the data points.

Front

What is a correlation coefficient?

Back

A correlation coefficient is a statistical measure that describes the strength and direction of a relationship between two variables, typically ranging from -1 to 1.