Unit 7 Individual Test

What type of correlation (association)?

The outside temperature and the amount of layers you wear.

• Positive correlation

• Negative correlation

• No correlation

Answer explanation

Remember! In the Las Vegas heat we usually wear a lot of t-shirts while in January plenty of jackets.

What is the type of association?

• Negative

• no association

• positive

Answer explanation

There is no association since the data points show no trend.

What type of association does this graph have?

• positive

• negative

• none

• all of the above

Answer explanation

Think of the data like a linear graph. Our linear graphs were positive as we went up.

What would be the correlation be between study time and test grades?

• positive correlation

• negative correlation

• no correlation

• cannot be determined

Answer explanation

The higher your grade, the more time you probably studied!

What is the trend for this scatter plot

• Negative

• Positive

• None

Answer explanation

The data continues to go down.

What type of relationship does the scatter plot show?

• Positive

• Negative

• No Relationship

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

• A
• B
• C
• D

If a scatterplot has no correlation then...

• ...it has no ordered pairs
• ...it has ordered pairs that have a negative pattern
• ...its ordered pairs have no predictable pattern
• ..it has ordered pairs that have a positive pattern

The test results of 66 students were compared to whether the students completed a provided review sheet.

Is there an association between completing the review sheet and passing the test?

• Yes, it was more likely that students who failed, completed the review sheet

• Yes, it was more likely that students who passed, completed the review sheet

• No, there is no association

According to the two-way table, a person who plays an instrument is most likely to:

• Not play an instrument

• Not play a team sport

• Play a team sport

• Play an instrument