Unit 3: Review (Algebra 1)

Front

What is the line of best fit?

Back

The 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 from data?

Back

You can use methods such as least squares regression to calculate the line of best fit, which minimizes the distance between the data points and the line.

Front

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

Back

A positive slope indicates that as the independent variable increases, the dependent variable also increases.

Front

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

Back

A negative slope indicates that as the independent variable increases, the dependent variable decreases.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables, with points representing individual data points.

Front

What is a relationship statement in data analysis?

Back

A relationship statement describes how two variables are related, often indicating a cause-and-effect relationship.

Front

How do you calculate coffee sales using a linear equation?

Back

Substitute the value of x (temperature) into the equation y = -60x + 6443 to find the corresponding coffee sales.

Front

What is relative frequency?

Back

Relative frequency is the ratio of the number of times an event occurs to the total number of trials or observations.

Front

How do you find the percentage of days it rained when no rain was forecasted?

Back

Divide the number of days it rained with no forecast by the total number of rainy days, then multiply by 100 to get the percentage.

Front

What is the formula for calculating a linear equation?

Back

A linear equation can be expressed in the form y = mx + b, where m is the slope and b is the y-intercept.