CK-12 Basic Probability and Statistics - A Short Course

http://www.ck12.org Chapter 6. Measures of Central Tendency - Basic

TABLE6.15:(continued)

Score of The Roll Frequency

9 1

10 1

11 1

12 1

What is the modal score?

4. The time (in minutes) taken by a man riding his bicycle to work were

54 , 57 , 55 , 58 , 55 , 57 , 57 , 56 , 58 , 54 , 58 , 54 , 54 , 53 , 56 , 58 , 57 , 53 , 55 , 57

What is the mode of his times?

5. The number of students attending class was recorded for thirty consecutive days. The recorded attendance
   was:

30 , 32 , 28 , 28 , 29 , 30 , 31 , 28 , 27 , 27 , 31 , 28 , 32 , 28 , 27

28 , 30 , 30 , 29 , 32 , 32 , 28 , 29 , 30 , 31 , 30 , 32 , 31 , 29 , 29

What is the modal attendance?

6. The Vince Ryan Hockey Tournament attracts teams from Canada and the United States. The host team has
   recorded their results over the past fifteen years of the tournament and has published the results in the local
   newspaper.

TABLE6.16:

Year Wins (2 Points) Ties (1 Point) Loses (0 Point)

1995 3 4 3

1996 4 0 6

1997 7 0 3

1998 3 2 5

1999 8 0 2

2000 5 0 5

2001 6 2 2

2002 7 2 1

2003 4 2 4

2004 5 1 4

2005 6 2 2

2006 5 4 1

2007 6 2 4

2008 6 0 4

2009 2 4 4

What is the mode for the host team’s points?

7. Two-color counters are often used when teaching students how to add and subtract integers. These counters
   are red on one side and yellow on the other. Three counters are tossed simultaneously 20 times. Each counter
   either landed Red (R) or Yellow(Y). The results of the tosses are shown below: