100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Statistics 101 Questions And Answers Latest Update $15.49   Add to cart

Exam (elaborations)

Statistics 101 Questions And Answers Latest Update

 1 view  0 purchase

Statistics 101 Questions And Answers Latest Update

Preview 3 out of 21  pages

  • October 31, 2024
  • 21
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
All documents for this subject (4)
avatar-seller
Schoolflix
Solution 2024/2025
Pepper

Statistics 101 Questions And Answers Latest
Update

Design ANS✔✔ Stating the goal and/or statistical question of interest and
planning how to obtain data that will address them



Description ANS✔✔ Summarizing and analyzing the data that are obtained



Inference ANS✔✔ Making decisions and predictions based on the data for
answering statistical questions



Variable ANS✔✔ The characteristic of being measured; any characteristic
observed in a study (parts of the study that are being studied)



Population ANS✔✔ Set of all of the subjects of interest



Sample ANS✔✔ The subset of the population for whom we will collect data



Descriptive Statistics ANS✔✔ Methods for summarizing collected data



Inferential Statistics ANS✔✔ Methods of making decisions or predictions
about a population based on data obtained from a sample of that
population; make predictions and draw conclusions



Sample Statistics ANS✔✔ Percentage of a sample for a specific variable

, Solution 2024/2025
Pepper



Parameter ANS✔✔ Numerical summary of the population



Statistic ANS✔✔ A numerical summary of a sample taken from the
population



Statistically Significant ANS✔✔ When the difference between results is so
large that it'd be odd to see such a difference by ordinary random variation



Categorical ANS✔✔ A variable on which each observation belongs to one of
a set of distinct categories



Quantitative ANS✔✔ A variable on which observations take numerical
values that represent different magnitudes of the variable



Quantitative Variables Key Features ANS✔✔ 1) Center, 2) Variability
(spread) of the data



Categorical Variables Key Features ANS✔✔ Relative number of observations
in various categories



Discrete ANS✔✔ A quantitative variable whose possible values for a set of
separate numbers; " the number of..."; anything with a finite number of
possible values



Continuous ANS✔✔ A quantitative variable whose values form an interval;
variables that have an infinite continuum of possible values

, Solution 2024/2025
Pepper



Distribution of a Variable ANS✔✔ Describes how the observations fall (are
distributed) across the range of possible values. For a categorical variable,
the possible values are the different categories: simply shows all possible
categories and the number (or proportion) of observations falling into each
category. For a quantitative variable, the entire range of possible values is
split up into separate intervals and the number (or proportion) of
observations falling in each interval.



Modal Category ANS✔✔ Category with the largest frequency



Quantitative Variable Characteristics ANS✔✔ Shape, center, variability



Frequency Table ANS✔✔ A listing of possible values for a variable, together
with the number of observations for each value



Proportion of Observations ANS✔✔ The number of observations in that
category divided by the total number of observations



Percentage ANS✔✔ The proportion multiplied by 100



Relative Frequencies ANS✔✔ Proportions and percentages



Pareto Chart ANS✔✔ A bar graph with categories ordered by their frequency



Pareto Principle ANS✔✔ The principle that states that a small subset of
observations often contain most of the observations

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 Schoolflix. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $15.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

72042 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$15.49
  • (0)
  Add to cart