TEKS.MATH.9-12.VI.C.2

If the sample is representative of a high school with 2,000 freshman and seniors, then based on the table, what is the predicted number of freshman at the high school who would select math as their favorite high school subject?

• 520
• 240
• 65
• 30

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TEKS.MATH.9-12.VI.C.2

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles? 

• A. 50 min
• B. 80 min
• C. 45 min
• D. 60 min

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TEKS.MATH.9-12.VI.C.2

Describe the correlation in the graph shown.

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

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TEKS.MATH.9-12.VI.C.2

What is a trend line that shows the most accurate relationship between x and y and is is very close to most of the data points?

• linear regression
• no correlation
• trend line
• line of best fit

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TEKS.MATH.9-12.VI.C.2

Attendance & grades have a r-value of
 ( - 0.89)...this indicates a ______ correlation.

• Strong positive 
• Weak positive 
• Strong negative 
• Weak negative 

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TEKS.MATH.9-12.VI.C.2

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

• 65

• 92

• 70

• 76

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TEKS.MATH.9-12.VI.C.2

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

• positive correlation
• negative correlation
• no correlation
• cannot be determined

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TEKS.MATH.9-12.VI.C.2

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

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TEKS.MATH.9-12.VI.C.2

The Jamison family kept a log of the distance they traveled during a trip, as represented by the graph below. During which interval was their average speed the greatest?

• the first hour to the second hour

• the second hour to the fourth hour

• the sixth hour to the eighth hour

• the eighth hour to the tenth hour

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TEKS.MATH.9-12.VI.C.2

If r=0, there is a strong correlation.

• True

• False

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TEKS.MATH.9-12.VI.C.2