Exam (elaborations)
UNIT 2- MILESTONE 2 INTRO TO STATS
- Course
- Institution
UNIT 2- MILESTONE 2 INTRO TO STATS
[Show more]
Content preview
UNIT 2- MILESTONE 2 INTRO TOSTATS
The midterm exam scores obtained by boys and girls in a class are listed in
the table below
What does the circled section represent?
Twelve boys scored 8 marks on the exam.
Two boys scored between 80 and 89 marks on the exam.
Eight boys scored over 10 marks on the exam.
Eight boys scored 12 marks on the exam. - -If we recall that the stem and
leaf can give us the actual values in the data set, then the circle corresponds
to 81 and 82. We can then note that there are two scores from boys between
80 and 89.
-Sara wonders what percentage of her students answered at least half of the
quiz questions incorrectly.
The cumulative frequency of students who earned a score of 20 or lower on
the quiz is __________. - -To get cumulative frequency of 20 or less, we
simply add up any bin that has the number 20 or less, such as the bin that
shows scores of 1-5, 6-10, 11-15, and 16-20.
-In which of these cases should mode be used?
When the data has extreme values
When the data is represented using ratio scale
When the data is represented using interval scale
When the data is qualitative and we talk about the most frequent category -
-If the data is qualitative, it is only descriptive. In this case, the mode is a
good measure since the mode examines the most frequently occurring
value. The data can be non-numeric.
-The third quartile (Q3) value from this box plot is __________.
48
37
29
60 - -The value for Q3 is the right edge of the box, which in this figure is 48.
-When a survey was conducted among 100 students to find their favorite
pizza topping, 45 students voted for pepperoni, 25 for mushrooms, and 30
voted for cheese.
If a pie chart were made showing the number of votes for each topping, the
central angle for the cheese sector would be __________.
198°
90°
108°
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Nursephil2023. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $8.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67096 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now