Quiz practice

Use the linear regression to find an equation that fits the​ data, where x is the years since 1990.

• y=18.05x - 30.2

• y=18x - 2

• y=18.05x - 35949.7

• y=18.05x + 35949.7

Describe the correlation in the graph shown.

• Strong Negative
• Strong Positive
• Weak Negative
• Weak Positive

Tags

CCSS.HSF-LE.A.1B

Describe the correlation in the graph shown.

• Strong Negative
• Strong Positive
• Weak Negative
• No Correlation

Tags

CCSS.HSF-LE.A.1B

Which of the following correlation coefficients shows the strongest relationship? (Hint: A correlation that is negative can still be strong.)

• r = 0.728
• r = -0.197
• r = 0.932
• r = -0.982

Tags

CCSS.HSS.ID.C.8

What would the correlation be between math grades and the time it takes to run a mile ?

• Postive Correlation
• Negative Correlation
• No Correlation
• Cannot Be Determined

Tags

CCSS.HSF-LE.A.1B

The amount of time a runner spends training and their time in the mile.

• positive correlation
• negative correlation
• no correlation
• not enough info

Tags

CCSS.HSF-LE.A.1B

What type of correlation describes the following sentence:
The number of people that go the pool and the temperature outside.

• positive
• negative
• none
• cannot be determined

Tags

CCSS.HSF-LE.A.1B

As x increases, y decreases.

• no correlation
• negative correlation
• correlation coefficient
• positive correlation

Tags

CCSS.HSF-LE.A.1B

As x increases, y increases

• correlation coefficient
• causation
• positive correlation
• negative correlation

Tags

CCSS.HSS.ID.C.8

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.9

Which of the following lines represents the trend line for the scatter plot?

• A

• B

• C

• D

Tags

CCSS.8.EE.B.5