Line of Best fit & Two Tables

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, used to make predictions about future data points.

Front

What is the purpose of using a line of best fit?

Back

The purpose of using a line of best fit is to make predictions based on the trends observed in the data.

Front

What does a positive association in a graph indicate?

Back

A positive association indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative association in a graph indicate?

Back

A negative association indicates that as one variable increases, the other variable tends to decrease.

Front

What does 'no association' mean in a graph?

Back

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

Front

How do you determine the relative frequency of a category?

Back

Relative frequency is determined by dividing the number of occurrences of a category by the total number of observations, then multiplying by 100 to get a percentage.

Front

What is the formula for calculating the slope of a line of best fit?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1) using two points (x1, y1) and (x2, y2) on the line.

Front

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

Back

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

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 how much one variable is affected by another.

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 that the line does not closely follow the trend of the data points, leading to poor predictions.