2.1 Linear Regression & Correlation Coefficient

Front

What can we determine from the correlation coefficient?

Back

Strength + Direction

Front

Determine the correlation of the points on the scatterplot: Positive Correlation, Negative Correlation, No Correlation, Zero Correlation.

Back

Positive Correlation

Front

A student who waits on tables at a restaurant recorded the cost of meals and the tip left by single diners. If the next diner orders a mean costing $14.50, how much tip should the waiter wait to receive? Options: $0.75, $1.01, $2.25, $1.98.

Back

$1.98

Front

The table gives the number of hours spent studying for an algebra exam (x) and the final exam (y). Determine the correlation of the data: Weak positive, Weak Negative, Strong Positive, Strong Negative.

Back

Strong Positive

Front

Write the equation for the table given: y = 1/3x, y = 3x, y = 1/2x.

Back

y = 3x

Front

What is the definition of linear regression?

Back

A statistical method used to model the relationship between a dependent variable and one or more independent variables.

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the range of the correlation coefficient?

Back

The correlation coefficient ranges from -1 to 1.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the variables.