,Ch. 1 Introduction to Statistics
1.1 An Overview of Statistics
1 Distinguish Between a Population and a Sample
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Identify the population and the sample.
1) A survey of 1378 American households found that 27% of the households own a computer.
2) When 1094 American households were surveyed, it was found that 67% of them owned two cars.
3) A survey of 2625 elementary school children found that 28% of the children could be classified as obese.
2 Distinguish Between a Parameter and a Statistic
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Determine whether the numerical value is a parameter or a statistic. Explain your reasoning.
4) A recent survey by the alumni of a major university indicated that the average salary of 10,500 of its 175,000
graduates was $95,000.
5) The average salary of all assembly-line employees at a certain car manufacturer is $41,000..
6) A survey of 1162 students was taken from a university with 10,000 students.
3 Distinguish Between Descriptive Statistics and Inferential Statistics
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
Identify whether the statement describes inferential statistics or descriptive statistics.
7) The average age of the students in a statistics class is 19 years.
A) descriptive statistics B) inferential statistics
8) The chances of winning the California Lottery are one chance in twenty-two million.
A) inferential statistics B) descriptive statistics
9) There is a relationship between smoking cigarettes and getting emphysema.
A) inferential statistics B) descriptive statistics
10) From past figures, it is predicted that 19% of the registered voters in California will vote in the June primary.
A) inferential statistics B) descriptive statistics
11) Based on previous clients, a marriage counselor concludes that the majority of marriages that begin with
cohabitation before marriage will result in divorce.
A) inferential statistics B) descriptive statistics
4 Concepts
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Provide an appropriate response.
12) Explain the difference between a sample and a population.
13) If you had to do a statistical study, would you use a sample or a population? Why?
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 evileye251. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $26.88. You're not tied to anything after your purchase.