CK-12-Basic Probability and Statistics Concepts - A Full Course

(Marvins-Underground-K-12) #1

http://www.ck12.org Chapter 5. Measures of Central Tendency


What is the mode of the amounts of time spent studying for the math test?



  1. A pre-test for students entering high school mathematics was given to 48 students. The following table shows
    the number of questions attempted out of 50 by each of the students taking the test:
    43 39 40 40 41 44
    42 41 41 41 42 44
    43 41 40 41 42 41
    42 41 42 42 41 44
    41 42 43 40 42 39
    42 40 39 42 43 42
    42 39 41 41 42 40
    43 44 40 42 44 39
    What number of questions was attempted the most by the students?

  2. A die was tossed 14 times. What is the mode of the numbers that were rolled?

  3. The following table represents the number of times that 24 students attended school basketball games during
    the year:


Number of Games 5 6 7 8 9
Number of Students 1 5 3 9 6

What is the mode of the numbers of games that students attended?



  1. The newly-formed high school soccer team is playing its first season. The following table shows the number
    of goals it scored during each of its matches:


Number of Goals 1 2 3
Number of Matches 8 8 m

If the mean number of goals scored is 2.04, what is the smallest possible value ofmif the mode of the numbers of
goals scored is 3?



  1. What is the mode of the following numbers, and what word can be used to describe the distribution of the data
    set?
    5 , 4 , 10 , 3 , 3 , 4 , 7 , 4 , 6 , 5 , 11 , 9 , 5 , 7

  2. List 3 examples of how mode could be useful in everyday life?

  3. The temperature in◦F on 20 days during the month of June was as follows:
    70 ◦F, 76 ◦F, 76 ◦F, 74 ◦F, 70 ◦F, 70 ◦F, 72 ◦F, 74 ◦F, 78 ◦F, 80 ◦F
    74 ◦F, 74 ◦F, 78 ◦F, 76 ◦F, 78 ◦F, 76 ◦F, 74 ◦F, 78 ◦F, 80 ◦F, 76 ◦F
    What is the mode of the temperatures for the month of June?

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