Line of Best Fit

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, showing the trend of the data points.

Front

What does a positive correlation indicate in a scatter plot?

Back

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

Front

What does a negative correlation indicate in a scatter plot?

Back

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

Front

What does 'no correlation' mean in the context of a scatter plot?

Back

No correlation means there is no apparent relationship between the two variables being plotted.

Front

How can you determine if a scatter plot shows a linear relationship?

Back

A scatter plot shows a linear relationship if the data points can be approximated by a straight line.

Front

What is the purpose of a trend line in a scatter plot?

Back

The purpose of a trend line is to summarize the relationship between the variables and to make predictions.

Front

How do you use a trend line to make predictions?

Back

You can use a trend line to predict values by finding where a specific x-value intersects the trend line and reading the corresponding y-value.

Front

What is the difference between a scatter plot and a line graph?

Back

A scatter plot displays individual data points to show relationships, while a line graph connects data points to show trends over time.

Front

What does it mean if a line of best fit is not accurate?

Back

If a line of best fit is not accurate, it means it does not closely follow the trend of the data points, leading to poor predictions.

Front

What is the significance of the slope in a line of best fit?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a stronger relationship.