Bivariate Data Exam

Find the relative frequency of kids 10 and over that love to swim outdoors.

What is the ratio of people who love to bike to those who don’t bike or swim?

What type of association does this scatter plot represent?

• Weak positive

• Moderate postiive

• Weak negative

• No Association

What is the line of best fit in a scatter plot primarily used for?

• To separate different groups of data

• To predict the value of one variable based on the value of another

• To calculate the exact values of all data points

• To create a boundary around all data points

Tags

CCSS.8.EE.B.5

What type of association does this scatter plot represent?

• Weak negative

• Moderate positive

• No association

• Strong negative

The scatter plot shows the number of hours of sleep and studying students had on a Saturday. How many students slept for 2 hours?

The scatter plot shows the number of hours of sleep and studying students had on a Saturday. How many students slept for the same number of hours that they studied?

The scatter plot shows the number of hours of miles jogged and the number of minutes jogged for a number of members at a gym. Which point is an outlier?

• (0.5, 6)

• (0.5, 26)

• (1.5, 8)

• (3.25, 34)

In a scatterplot r is called

• Coefficient of Determination

• Correlation coefficient

• Regression Line

• Slope

A measure that shows how closely the data fits a graph. The value measures from -1 to 1.

• data value

• absolute value

• leading coefficient

• correlation coefficient