Prob. & Stats Chapter 4 Review

Mr. Ireland bowled 7 games last weekend. His scores were: 155, 165, 138, 172, 127, 193, 142. What is the range of Mr. Ireland's scores?

• 193
• 127
• 60
• 66

Here are the winning margins of victory for every NFL game played in Week 1 of the 2017 season:  
15, 9, 6, 20, 3, 12, 8, 13, 22, 37, 8, 20, 16, 10, 3
Find the midrange of this data set. 

• 34
• 17
• 20
• 13.5

Here are the winning margins of victory for every NFL game played in Week 1 of the 2017 season:  
15, 9, 6, 20, 3, 12, 8, 13, 22, 37, 8, 20, 16, 10, 3
Find the Upper Quartile (Q3) of this data.  Try this by "Hand", as you will be required to do so on tomorrow's quiz. 

• 20
• 12
• 8
• 15

Here are the winning margins of victory for every NFL game played in Week 1 of the 2017 season:  
15, 9, 6, 20, 3, 12, 8, 13, 22, 37, 8, 20, 16, 10, 3
What is the best measure of center and spread for this data?  (Make sure you can explain why)

• Center: Median
  Spread:  St. Deviation
• Center: Mean
  Spread:  St. Deviation
• Center:  Median
  Spread:  IQR
• Center:  Median
  Spread:  Range

Find the standard deviation for the data given:
5, 10, 7, 13, 20
(I encourage you to do this by "Hand" and not your calculator, as you will be asked to do this on the quiz tomorrow)

• 55
• 11
• 5.9
• 5.3

If a number that is far away from the mean is added to a data set, how does this affect standard deviation?

• increase
• decrease
• stay the same
• both increase and decrease

Using the information below, identify which of the following is an outlier:
Q1 = 3
Median = 7
Q3 = 12

• 22
• 25.5
• -8.5
• 26

Using the information below, identify which of the following is NOT an outlier:
Q1 = 53
Median = 55
Q3=61

• 73
• 40
• 80
• 73.5

• only Hayes Road is symmetric
• Hayes Road's center is at 60
• Jefferson Road's center is at 55
• only Jefferson Road is symmetric

• the median wait time for both rides is 35
• the Red Racer has a lower maximum than the Wild Viper
• the Wild Viper has a larger spread than Red Racer
• the Red Racer has a larger IQR than the Wild Viper