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.

Front

What does an outlier represent in a scatter plot?

Back

An outlier is a data point that differs significantly from other observations in a dataset, indicating a deviation from the overall pattern.

Front

How do you identify an outlier in a scatter plot?

Back

An outlier can be identified as a point that is far away from the cluster of other points in the scatter plot.

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data.

Front

How do you calculate the slope of a line given two points?

Back

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are the coordinates of the two points.

Front

What does a positive slope indicate in a scatter plot?

Back

A positive slope indicates that as one variable increases, the other variable also increases.

Front

What does a negative slope indicate in a scatter plot?

Back

A negative slope indicates that as one variable increases, the other variable decreases.

Front

What is the purpose of the line of best fit in data analysis?

Back

The line of best fit helps to predict values and understand the relationship between variables in a dataset.

Front

What are coordinates in a scatter plot?

Back

Coordinates are the (x, y) values that represent the position of a point on the scatter plot.

Front

What does it mean if the points in a scatter plot form a linear pattern?

Back

If the points form a linear pattern, it indicates a consistent relationship between the two variables, which can be modeled with a linear equation.