Scatter Plots and Correlation

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does correlation mean in statistics?

Back

Correlation refers to a statistical measure that describes the extent to which two variables change together.

Front

What are the types of correlation?

Back

1. Positive Correlation: Both variables increase together. 2. Negative Correlation: One variable increases while the other decreases. 3. No Correlation: No relationship between the variables.

Front

How do you identify a positive correlation in a scatter plot?

Back

In a scatter plot, a positive correlation is identified when the data points trend upwards from left to right.

Front

How do you identify a negative correlation in a scatter plot?

Back

In a scatter plot, a negative correlation is identified when the data points trend downwards from left to right.

Front

What does 'no correlation' mean?

Back

'No correlation' means that there is no discernible relationship between the two variables being analyzed.

Front

What is the equation of a line in slope-intercept form?

Back

The equation of a line in slope-intercept form is y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope (m) represent in a linear equation?

Back

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

Front

What does the y-intercept (b) represent in a linear equation?

Back

The y-intercept (b) represents the value of y when x is zero, indicating where the line crosses the y-axis.

Front

How can you determine the flat rate in a cost equation?

Back

The flat rate can be determined by rearranging the cost equation to isolate the fixed cost when the variable cost is zero.