Measures of center and variability to compare populations

Mr.Parker's class has an average grade of 87. Later on she realizes she left out Joe's score. His grade was a 65. The new mean will ,....

• Increase

• Decrease

• Stay the same

• Idek

What is the mean of these numbers?
4,5,5,2,3,3,2,8

• 40
• 24
• 4
• 256

Tags

CCSS.6.SP.B.5C

What is the range of the chart above?

• 10

• 12

• 15

• 2 - 12

A data set can have more than one median?

• True
• False

Tags

CCSS.7.NS.A.3

The number of pages that Carl wrote in his journal each day from Monday to Friday is shown below:

9, 8, 12, 6, 10

What is the mean number of pages he wrote per day?

• 5

• 6

• 9

• 11

A data set can have more than one mode

• True
• False

If both sets of data are symmetric, the most appropriate measure of center and variation to use are...

• median & interquartile range

• mean & interquartile range

• median & mean absolute deviation

• mean & mean absolute deviation

If one or both sets of data are not symmetric, the most appropriate measure of center and variation to use are...

• median & interquartile range

• mean & interquartile range

• median & mean absolute deviation

• mean & mean absolute deviation

The double dot plots show the average wait times in minutes for two popular rides at an amusement park. Compare the measures of center and variation, which ride typically has a longer wait time?

• No inference can be made from the graph.

• Topsy Turvy

• The wait times are the same for both rides.

• Rocket Blast

The box-and-whisker plots show the points scored in each Super Bowl by the AFC and NFC. About how many points higher is the upper quartile for the NFC than the AFC?

• 5 points
• 7 points
• 10 points
• 15 points