Math 1 Q2 Warmups #5

Front

What happens to the mean of a data set if a value greater than the mean is added?

Back

The mean would go up.

Front

What is the slope of a line that is perpendicular to a line with a slope of 5/8?

Back

-8/5

Front

What does the graph of a system of equations with no solution look like?

Back

Parallel lines.

Front

How does the number of visitors change as the temperature increases according to the scatter plot?

Back

As the temperature increases, the number of visitors increases.

Front

What indicates that a regression line is an appropriate model for the data in residual plots?

Back

The residuals should be randomly scattered around zero.

Front

What is the definition of mean in a data set?

Back

The mean is the average of all the values in the data set.

Front

What is the definition of slope in a linear equation?

Back

The slope is the ratio of the rise (change in y) to the run (change in x).

Front

What does it mean if two lines are parallel?

Back

They have the same slope and will never intersect.

Front

What is a scatter plot used for?

Back

To show the relationship between two variables.

Front

What is a residual in regression analysis?

Back

The difference between the observed value and the predicted value.