Scatter Plot Check for Understanding

Front

What is a scatter plot?

Back

A scatter plot is a graphical representation of two variables, where each point represents an observation in the dataset, allowing for the visualization of relationships between the variables.

Front

What does the line of best fit represent in a scatter plot?

Back

The line of best fit is a straight line that best represents the data points in a scatter plot, indicating the general direction of the relationship between the two variables.

Front

How do you interpret the slope of a trend line in a scatter plot?

Back

The slope of a trend line indicates the rate of change of the dependent variable (y) for each unit change in the independent variable (x). A positive slope indicates a positive relationship, while a negative slope indicates a negative relationship.

Front

What does a negative association between two variables mean?

Back

A negative association means that as one variable increases, the other variable tends to decrease, indicating an inverse relationship.

Front

What is the significance of the y-intercept in a linear equation?

Back

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

Front

How can you determine if a scatter plot shows a strong relationship between two variables?

Back

A strong relationship is indicated by data points that are closely clustered around the line of best fit, showing little scatter.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

What does it mean if a scatter plot has no discernible pattern?

Back

If a scatter plot has no discernible pattern, it suggests that there is no relationship between the two variables being analyzed.

Front

How can you identify the line of best fit visually?

Back

The line of best fit can be identified visually as the line that minimizes the distance between itself and all the data points in the scatter plot.

Front

What is the purpose of using a scatter plot in data analysis?

Back

The purpose of using a scatter plot is to visually assess the relationship between two quantitative variables, helping to identify trends, correlations, and potential outliers.