Lines of Best Fit (A1.2.2.2.1)

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

How do you determine the line of best fit visually?

Back

The line of best fit should have approximately equal numbers of points above and below it, minimizing the distance from all points to the line.

Front

What is the purpose of a line of best fit?

Back

The purpose is to make predictions about the data and to understand the relationship between variables.

Front

What does a positive slope in a line of best fit indicate?

Back

A positive slope indicates a direct relationship, meaning as one variable increases, the other variable also increases.

Front

What does a negative slope in a line of best fit indicate?

Back

A negative slope indicates an inverse relationship, meaning as one variable increases, the other variable decreases.

Front

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

Back

Front

How can you find the slope of a line of best fit?

Back

Front

What is the y-intercept in the context of a line of best fit?

Back

Front

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

Back

It helps in understanding trends, making predictions, and analyzing the strength of relationships between variables.

Front

What is the least squares method?

Back

The least squares method is a statistical technique used to determine the line of best fit by minimizing the sum of the squares of the vertical distances of the points from the line.