MATH 1280 Introduction to Statistics – Midterm Exam – part 4

Wednesday, August 7, 2019
Painted by Max Ernst

Midterm Part 4 – questions 8 - 9, include its answer (total questions are 16)

Eighty adults with gum disease were asked the number of times per day they flossed. The (incomplete) results are shown below:

# per day
 Freq. 
 Rel. Freq
 Cum. Rel. Freq
0
 15
.1875
 
1
 21
.2625
 
2
 18
.2250
 
3
   
     
 .7875
4
 
     
 .9000
5
 
     
 1.000


One of Max Erst paintings

Fill in the blanks in the table and answer the next two question:
8) The count of people who flossed three times per day is:
Select one:
a. 11
b. 18
c. 12
d. 9 …>Correct
e. can not be determined
Answer: 80 – (15+21+18+9+8) = 9 people


Another Max Ernst painting

9) The cumulative relative frequency of those who flossed 0 to 2 times per day is:
Select one:
a. .2250
b. .7875
c. .6750 …>Correct
d. .1875
e. 0.000
answer: 0.1875 + 0.2625 +0.2250 = 0.6750

# To be continued to part 5

27 comments:

  1. This comment has been removed by the author.

    ReplyDelete
  2. Interesting. My hygienist told me more than once per day is overkill. Are there really people who do it 5 times a day?

    Love the Ernst paintings!

    ReplyDelete
    Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      Midterm Part 4 – questions 8 - 9, include its answer (total questions are 16)

      Delete
    2. MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      9) The cumulative relative frequency of those who flossed 0 to 2 times per day is:

      Select one:
      a. .2250
      b. .7875
      c. .6750 …>Correct
      d. .1875
      e. 0.000
      answer: 0.1875 + 0.2625 +0.2250 = 0.6750

      # To be continued to part 5

      Delete
  3. I love statistics too. Thanks...

    ReplyDelete
    Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      Eighty adults with gum disease were asked the number of times per day they flossed. The (incomplete) results are shown below:

      Delete
    2. MATH 1280 Introduction to Statistics – Midterm Exam – part 4

      Delete
  4. Me encantan esas pinturas y las matemáticas tambien.

    ReplyDelete
    Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      Fill in the blanks in the table and answer the next two question:
      8) The count of people who flossed three times per day is:
      Select one:
      a. 11
      b. 18
      c. 12
      d. 9 …>Correct
      e. can not be determined
      Answer: 80 – (15+21+18+9+8) = 9 people

      Delete
  5. Posts Full of Art and humanism.
    A very interesting try.
    And thank you very much for your comment in my Blog.

    T ime full of
    a rts for a
    n ice trip with
    z eal
    a nd knowledge

    Warmest greetings from Volos.

    ReplyDelete
    Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      9) The cumulative relative frequency of those who flossed 0 to 2 times per day is:

      Select one:

      a. .2250

      b. .7875

      c. .6750 …>Correct

      d. .1875

      e. 0.000

      answer: 0.1875 + 0.2625 +0.2250 = 0.6750

      Delete
    2. MATH 1280 Introduction to Statistics – Midterm Exam – part 4

      Delete
  6. Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      Midterm Part 4 – questions 8 - 9, include its answer (total questions are 16)

      Delete
  7. Interesting subject. I ll wait for the next post.
    Xoxo

    marisasclosetblog.com

    ReplyDelete
    Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      Eighty adults with gum disease were asked the number of times per day they flossed. The (incomplete) results are shown below:

      Delete
  8. Ernst's artwork is amazing. The math is tricky!

    ReplyDelete
    Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      Fill in the blanks in the table and answer the next two question:
      8) The count of people who flossed three times per day is:
      Select one:
      a. 11
      b. 18
      c. 12
      d. 9 …>Correct
      e. can not be determined
      Answer: 80 – (15+21+18+9+8) = 9 people

      Delete
    2. MATH 1280 Introduction to Statistics – Midterm Exam – part 4

      Delete
  9. Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      9) The cumulative relative frequency of those who flossed 0 to 2 times per day is:
      Select one:
      a. .2250
      b. .7875
      c. .6750 …>Correct
      d. .1875
      e. 0.000
      answer: 0.1875 + 0.2625 +0.2250 = 0.6750

      Delete
    2. MATH 1280 Introduction to Statistics – Midterm Exam – part 4

      Delete
  10. Good luck with the math. Hope it goes well. I am grateful that I have a job that doesn't require a lot of math work.

    ReplyDelete
    Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      Midterm Part 4 – questions 8 - 9, include its answer (total questions are 16)

      Eighty adults with gum disease were asked the number of times per day they flossed. The (incomplete) results are shown below:

      Delete
    2. MATH 1280 Introduction to Statistics – Midterm Exam – part 4

      Delete
  11. Replies
    1. Thanks to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 4
      @
      Fill in the blanks in the table and answer the next two question:
      8) The count of people who flossed three times per day is:
      Select one:
      a. 11
      b. 18
      c. 12
      d. 9 …>Correct
      e. can not be determined
      Answer: 80 – (15+21+18+9+8) = 9 people

      Delete