MATH 1280 Introduction to Statistics – Midterm Exam – part 1

Friday, July 12, 2019
Portrait of Picasso, painted by Picasso, just for illustration

Midterm Part 1 – questions 1 to 3 include their answers (total questions is 16)

Consider the following study:
Marketing researchers Dominique and Huong wanted to know the following:
What percent of customers wear rain jackets at Seattle Food Store each day?”

In an attempt to answer that question, Dominique and Huong designed a study. They called the store manager and arranged to collect data for 20 days.

The researchers collected data for 4 hours each day for 20 days and counted the total number of shoppers who did and did not wear a rain jacket.

The average number of customers per day who wore a rain jacket during the sample period was 32.

Questions and Answers:
1) The population in this study was (read each answer and select the best one):
Select one:
a. All shoppers in Seattle.
b. All people who wear rain jackets.
c. All shoppers at the Seattle Food Store
d. All shoppers at the Seattle Food Store during the study period.
e. The 32 people per day who wore rain jackets to the Seattle Food Store.

Answer: c. All shoppers at the Seattle Food Store….> Correct

Old guitarist, painted by Picasso

2) The sample in this survey was:
Select one:
a. Dominique and Huong.
b. The people who were observed shopping at the Seattle Food Store during the study
c. The people who wear rain jackets.
d. The four hours per day that were studied.
e. The 32 people per day who wore rain jackets to the Seattle Food Store.

Answer: b. The people who were observed shopping at the Seattle Food Store during the study


Violin and grapes, painted by Picasso

3) How would you describe the possibility that the sample was biased (read all answers and select the best one):
Select one:
a. There is no bias because the sample was large.
b. There is no bias because the multiple days were sampled.
c. There could be bias because the selected days might not be representative of all the days (such as changing weather)
d. Not enough information to determine the answer. Incorrect

Answer: c. There could be bias because the selected days might not be representative of all the days (such as changing weather). 

27 comments:

  1. Interesting math study. I love these Picasso choices. Old Guitarist is a beauty.

    ReplyDelete
    Replies
    1. yes, Picasso is one of brilliant artists...

      Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      Portrait of Picasso, painted by Picasso, just for illustration

      Midterm Part 1 – questions 1 to 3 include their answers (total questions is 16)

      Delete
  2. I am so so sorry, Tanza. This is another great informative post, full of interesting stats. BUT, my brain is "fried"...went on vacation as soon as my care giving duties ended at 6:00 pm today.

    Maybe I can digest better after the weekend. In the meantime, great post. Thanks for sharing it.

    Wishing you a wonderful weekend!

    ReplyDelete
    Replies
    1. I see....have a great vacation...

      Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      Consider the following study:
      Marketing researchers Dominique and Huong wanted to know the following:
      “What percent of customers wear rain jackets at Seattle Food Store each day?”

      Delete
  3. Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      In an attempt to answer that question, Dominique and Huong designed a study. They called the store manager and arranged to collect data for 20 days.

      Delete
  4. Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      The researchers collected data for 4 hours each day for 20 days and counted the total number of shoppers who did and did not wear a rain jacket.

      Delete
  5. Tanza, you do not tell us to what age group this study is aimed. The questions seem very simple.

    ReplyDelete
    Replies
    1. for undergraduate....

      Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      The average number of customers per day who wore a rain jacket during the sample period was 32.

      Delete
  6. Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      Questions and Answers:
      1) The population in this study was (read each answer and select the best one):
      Select one:
      a. All shoppers in Seattle.
      b. All people who wear rain jackets.
      c. All shoppers at the Seattle Food Store
      d. All shoppers at the Seattle Food Store during the study period.
      e. The 32 people per day who wore rain jackets to the Seattle Food Store.

      Answer: c. All shoppers at the Seattle Food Store….> Correct

      Delete
  7. Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      Old guitarist, painted by Picasso

      Delete
  8. Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      2) The sample in this survey was:
      Select one:
      a. Dominique and Huong.
      b. The people who were observed shopping at the Seattle Food Store during the study
      c. The people who wear rain jackets.
      d. The four hours per day that were studied.
      e. The 32 people per day who wore rain jackets to the Seattle Food Store.

      Answer: b. The people who were observed shopping at the Seattle Food Store during the study

      Delete
  9. Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      Violin and grapes, painted by Picasso

      Delete
  10. Best General knowledge platform. Thank you for the Author.
    Sandy recent posted
    types of graphics design

    ReplyDelete
    Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      3) How would you describe the possibility that the sample was biased (read all answers and select the best one):
      Select one:
      a. There is no bias because the sample was large.
      b. There is no bias because the multiple days were sampled.
      c. There could be bias because the selected days might not be representative of all the days (such as changing weather)
      d. Not enough information to determine the answer. Incorrect

      Answer: c. There could be bias because the selected days might not be representative of all the days (such as changing weather).

      Delete
  11. interesting post ☺
    I learned a lot of things - thank you ☺
    greetings
    Lili

    ReplyDelete
    Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      Portrait of Picasso, painted by Picasso, just for illustration

      Delete
  12. It's very interesting article, I love Math, algebra more than geometric hhhh,

    ReplyDelete
    Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      Midterm Part 1 – questions 1 to 3 include their answers (total questions is 16)

      Consider the following study:
      Marketing researchers Dominique and Huong wanted to know the following:
      “What percent of customers wear rain jackets at Seattle Food Store each day?”

      In an attempt to answer that question, Dominique and Huong designed a study. They called the store manager and arranged to collect data for 20 days.

      The researchers collected data for 4 hours each day for 20 days and counted the total number of shoppers who did and did not wear a rain jacket.

      The average number of customers per day who wore a rain jacket during the sample period was 32.

      Delete
  13. I don't know about the maths, but the pictures you chose to illustrate it are wonderful.

    ReplyDelete
    Replies
    1. Thank you to visit:
      MATH 1280 Introduction to Statistics – Midterm Exam – part 1
      @
      Questions and Answers:
      1) The population in this study was (read each answer and select the best one):
      Select one:
      a. All shoppers in Seattle.
      b. All people who wear rain jackets.
      c. All shoppers at the Seattle Food Store
      d. All shoppers at the Seattle Food Store during the study period.
      e. The 32 people per day who wore rain jackets to the Seattle Food Store.

      Answer: c. All shoppers at the Seattle Food Store….> Correct

      Delete