Statistics

What percentage of Middle School students prefer romantic- comedies? 

• 56%
• 19%
• 44%
• 32%

What percentage of High School students prefer Action? 

• 8%
• 12%
• 28%
• 4%

What percentage of those surveyed prefer Horror? 

• 44%
• 16%
• 40%
• 15%

The following Box plot represents the test scores on students latest Mathematics exam. What was the median test score?

• 75
• 70
• 85
• 72.5

The following Box plot represents the test scores on students latest Mathematics exam. What was the range of test scores?

• 75
• 65
• 45
• 55

Which statistic CANNOT be determined from a box and whisker plot representing the average salary of a state worker?

• The lowest salary
• The highest salary
• The median salary
• The salary that employees receive most frequently 

Which destination has a median temperature below 80 degrees and the smallest interquartile range?

• Ocean Beach
• Serene Shores
• Whispering Palms
• Pelican Beach

Which destination has a median temperature above 80 degrees and the largest interquartile range?

• Ocean Beach
• Serene Shores
• Whispering Palms
• Pelican Beach

Which equation best represents the linear regression for this set of data?

• y = 15x
• y = 0.07x
• y = 0.1x - 0.4
• y = 14.1x + 5.8

What is the correlation coefficient of the following data? What does that mean?

• r = .9977; there is a strong positive correlation
• r = .9977; there is a moderate positive correlation
• r² = .9954; there is a strong positive correlation
• r² = .9954; there is a moderate positive correlation