Drawing Comparative Inferences About Two Populations Using Measures of Central Tendency

Which box and whisker plot has the highest median?

• Top plot
• Bottom plot
• They are the same

Which city has a higher median?

• Millersburg
• Arcadia
• They are the same

Which inference about the two populations is true

• Both sets of data have the same interquartile range
• Both sets of data have the same median
• Ander's data centers areound 6 and Marcus's data centers around 7
• The interquartile range for Ander's data is .5 greater than the interquartile range for Marcus's data

What is the difference between the medians?

• 16
• 12
• 8
• 4

Which has a larger IQR?

• Zach
• Steven
• They have the same IQR

Which has a Median of 1?

• Zach 
• Steven 
• They both have a median on 1

If I want to make sure I have data in the top 50% of plot A, I should make sure to pick a number greater than what amount?

• 14
• 30
• 18
• 22

If plot B has 60 numbers in it, about how many are in the box?

• 15
• 30
• 60
• 120

Which is NOT ture?

• The spreads of the low temperatures for Reybold and Picktown are not the same
• Neither box plot is symmetrical
• The median low temeratures for Reybold and Picktown are different
• The lower extreme for Picktown is approximately 5 degrees lower than the lower extreme for Reybold

Kono gathers the heights of a random sample of sixth graders and seventh graders and displays the data in box plots. What can he say about the two data sets?

The median of the _______ grade sample is greater than the median of the ________ grade sample.

The ________ grade sample has greater variability.

• The median of the 6th-grade sample is greater than the median of the 7th-grade sample.

  
  

  The 6th-grade sample has greater variability.

• The median of the 7th-grade sample is greater than the median of the 6th-grade sample.

  
  

  The 7th- grade sample has greater variability.

• The median of the 6th-grade sample is greater than the median of the 7th-grade sample.

  
  

  The 7th-grade sample has greater variability.

• The median of the 7th-grade sample is greater than the median of the 6th-grade sample.

  
  

  The 6th-grade sample has greater variability.