Topic 4 Review

Front

What is a line of best fit?

Back

A line that best represents the data on a scatter plot, showing the trend of the data points.

Front

How do you determine the equation of a line of best fit from a graph?

Back

By identifying two points on the line and using the slope-intercept form (y = mx + b).

Front

What does the slope of a line represent in a graph?

Back

The rate of change between the two variables represented on the axes.

Front

What is relative frequency?

Back

The ratio of the number of times an event occurs to the total number of events, often expressed as a percentage.

Front

How do you interpret a scatter plot?

Back

By analyzing the distribution of points to determine if a relationship exists between the variables.

Front

What does it mean if two variables have a positive correlation?

Back

As one variable increases, the other variable also increases.

Front

What does it mean if two variables have a negative correlation?

Back

As one variable increases, the other variable decreases.

Front

What is the purpose of a scatter plot?

Back

To visually display the relationship between two quantitative variables.

Front

How can you estimate values using a scatter plot?

Back

By finding the corresponding point on the line of best fit for a given value.

Front

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

Back

It represents the value of y when x is zero.