TEKS.MATH.9-12.VI.C

A survey explored the relationship between gender and band class. Which is a reasonable conclusion?

• There are more band members than non-band members
• There are more boys in the class than girls
• There are more boys in band than not in band
• More than half of the bands members in the class are girls

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TEKS.MATH.9-12.VI.C

Determine the Correlation Coefficient and decide whether it is weak, moderate, or strong.

• 0.07 weak
• -0.26 weak
• -0.26 moderate
• 0.07 strong

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TEKS.MATH.9-12.VI.C

What is the average rate of change of milk prices between 1976 and 1993?

• 0.06
• 0.05
• 0.04
• 0.03

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TEKS.MATH.9-12.VI.C

As x increases, y increases

• correlation coefficient
• causation
• positive correlation
• negative correlation

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TEKS.MATH.9-12.VI.C

What type of correlation does this scatter plot show?

• positive

• negative

• no correlation

• nonlinear association

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TEKS.MATH.9-12.VI.C

7

• A

• B

• C

• D

• E

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TEKS.MATH.9-12.VI.C

As x increases, y decreases.

• A) no correlation

• B) negative correlation

• C) correlation coefficient

• D) positive correlation

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TEKS.MATH.9-12.VI.C

As x increases, y increases

• A) correlation coefficient

• B) causation

• C) positive association

• D) negative association

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TEKS.MATH.9-12.VI.C

A student rode a bike from school to a recreation center. The graph shows the student's distance in miles from the recreation center after riding the bike for x minutes. What is the range of the function for this situation? HINT: what are the smallest and biggest y values the line touches?

• All real numbers greater than or equal to 0 and less than or equal to 28.

• All real numbers greater than or equal to 0 and less than or equal to 9.

• All real numbers less than or equal to 28.

• All real numbers less than or equal to 9.

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TEKS.MATH.9-12.VI.C

A survey company was trying to see if people in a state thought the pollution was too high.

Which choice best represents the parameter of interest?

• All people in the state.

• Percentage of all people in the state who thought the pollution was too high.

• 500 randomly selected residents of the state.

• 71% of the residents surveyed thought the pollution was too high.

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TEKS.MATH.9-12.VI.C