2.15 Scatter Plots

Front

What is a line of best fit used for?

Back

To make predictions

Front

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

Back

negative

Front

About how many male math teachers were there in 2006? Options: 15, 30, 35, 45

Back

35

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

What would be the correlation between study time and test grades? Options: positive, negative, none, cannot be determined

Back

positive

Front

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

Back

Strong negative

Front

Determine the correlation coefficient of the given data:

.9820

,

-.9643

,

1.409

,

.6864

Back

.9820

Front

Back

Front

Equation of the line of best fit:

Back

y= -2x + 10

Front

Given the table, calculate the r value.

Back

0.99