01 Interpretting Scatterplots

A scatterplot shows the number of days that have passed and the number of days left in a month. The explanatory variable is the number of days that have passed. The response variable is the number of days left. Is there a positive or negative correlation?

• Positive Correlation

• Negative Correlation

Examine the scatterplot. Identify if it shows a positive correlation, a negative correlation, or no correlation.

• Positive Correlation

• Negative Correlation

• No Correlation

Examine the scatterplot. Identify if it shows a positive correlation, a negative correlation, or no correlation.

• Positive Correlation

• Negative Correlation

• No Correlation

Examine the scatterplot. Identify if it shows a positive correlation, a negative correlation, or no correlation.

• Positive Correlation

• Negative Correlation

• No Correlation

This set of bivariate data has a causal relationship. Determine the explanatory and response variable.

Height and weight of a student

• Explanatory: Height, Response: Weight

• Explanatory: Weight, Response: Height

This set of bivariate data has a causal relationship. Determine the explanatory and response variable.

Grade on a math test and number of hours the student

studied

• Explanatory: House Studies, Response: Grade

• Explanatory: Grade, Response: Hours Studied

The MyTunes Song Service sells music downloads. Over the past few years, the service has lowered its prices. The table shows the price per song and the number of songs downloaded per day at that price.

Examine the data without drawing a scatterplot. Describe any trends you see.

• As x decreases, y increases

• As x decreases, y also decreases

The MyTunes Song Service sells music downloads. Over the past few years, the service has lowered its prices. The table shows the price per song and the number of songs downloaded per day at that price.

Without drawing a scatterplot, describe the correlation.

• Positive Correlation

• Negative Correlation

• No Correlation