10/16 Mini Quiz

Which is the explanatory variable?

• Average Daily Temperature

• Visitors

In the relationship between the number seeds planted in a garden and the number of fruit grown. The explanatory variable is

• The number of fruit grown

• The amount of soil in the garden

• The number of hours spent watering the plants

• The number of seeds planted

What axis does the response variable go on?

• x-axis

• y-axis

In the relationship between the time spent shopping and the number of items bought. The response variable is

• The number of items bought

• The number of items at the shop

• The time spent shopping

• The time spent getting to the shops

The response variable is the outcome or result of the study.

• True

• False

What does a positive value of correlation (r) indicate?

• An upward slope in the data

• A downward slope in the data

• No correlation

• A perfect positive correlation

What does a negative value of correlation (r) indicate?

• An upward slope in the data

• A downward slope in the data

• No correlation

• A perfect negative correlation

What does a correlation value of 0 indicate?

• No correlation

• A perfect positive correlation

• A perfect negative correlation

• An undefined correlation

Lemon trees receiving the most water produced the most lemons. Find the explanatory variable.

• Water received

• Lemons produced

Which statement is true based on the segmented bar graph above?

• The number of kids with cell phones is about the same for ages 13-15 and 16-18

• About 75% of kids with cell phones are ages 13-15

• About 75% of kids age 13-15 have a cell phone

• 320 kids were involved in this surve