IM Algebra I Unit 3 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 predicted value using a line of best fit equation?

Back

Substitute the given x-value into the equation to find the corresponding y-value.

Front

What does the slope of a line of best fit represent?

Back

The rate of change of the dependent variable (y) with respect to the independent variable (x).

Front

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

Back

The value of y when x is 0, indicating the starting point of the line on the y-axis.

Front

If the equation of a line of best fit is y = mx + b, what do m and b represent?

Back

m is the slope and b is the y-intercept.

Front

What does a correlation coefficient of r = 0.92 indicate about the relationship between two variables?

Back

It indicates a strong positive correlation, suggesting that as one variable increases, the other also tends to increase.

Front

What is the purpose of using a scatter plot?

Back

To visually display the relationship between two quantitative variables.

Front

How can you use a trend line to make predictions?

Back

By extending the trend line and substituting x-values to find corresponding y-values.

Front

What does it mean if a relationship is described as causal?

Back

It means that changes in one variable directly cause changes in another variable.

Front

How do you calculate the expected number of hits from a player using the line of best fit equation?

Back

Substitute the number of times at bat (x) into the equation to find the expected number of hits (y).