Line of Best Fit and r - values AFDA 2.5

Front

What type of association does this graph have? Options: positive, negative, none, all of the above

Back

negative

Front

What type of association does this graph show? Options: Positive, negative, none, all of the above

Back

none

Front

Which sentence describes the relationship shown on this scatter plot? Options: As the temperature decreases, the visitors increase. , As the temperature increases, the number of visitors increases. , As the visitors increase, the temperature decreases. , No correlation

Back

As the temperature increases, the number of visitors increases. 

Front

This measures how strong or weak the relationship between 2 quantitative variables are.

Back

Correlation

Front

What does the value, r= -0.89, tell us about the linear relationship of two quantitative variables?

Back

Strong negative

Front

When you check your scatter plot to see if it is straight (linear), curved, or any other pattern you are looking at _________

Back

Form

Front

Table comparing foot length to height in cm. Calculate a line of best fit.

Back

f(x) = 5.57x + 25.05

Front

Using the line of best fit, how tall would the tree be 30 years after it was planted?

Back

37 feet

Front

r=0.3

Back

Weak positive

Front

What is the line of best fit? Options: f(x)= 5x+1.82, cannot be determined, f(x)= 1.82x + 5.02, f(x)= 1.1x + 4.2

Back

f(x)= 1.82x + 5.02