Practice: Scatter Plots

Front

What is the range of the correlation coefficient 'r'?

Back

-1 ≤ r ≤ 1

Front

What is the equation of the line of best fit for the given data?

Back

y = -0.18x + 6.47

Front

Which line represents the line of best fit in a scatter plot?

Back

B) Orange

Front

How would you describe a weak negative correlation in a scatter plot?

Back

As one variable increases, the other variable tends to decrease slightly.

Front

What does the correlation coefficient indicate?

Back

Strength + Direction of the relationship between two variables.

Front

What does a correlation coefficient of -1 indicate?

Back

Perfect negative correlation.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the variables.

Front

What does a correlation coefficient of 1 indicate?

Back

Perfect positive correlation.

Front

How can you visually identify the line of best fit in a scatter plot?

Back

It is the line that best represents the data points, minimizing the distance from all points.

Front

What is the purpose of the line of best fit?

Back

To predict values and understand the relationship between variables.