CHAPTER 1

PARAMETER

NUMERICAL DESCRIPTION OF A POPULATION

STATISTIC

NUMERICAL DESCRIPTION OF A SAMPLE

POPULATION OR SAMPLE: THE POLITICAL PARTY OF EVERY US PRESIDENT

POPULATION, BECAUSE IT IS A COLLECTION OF ALL OF THE US PRESIDENTS POLITICAL PARTIES.

POPULATION OR SAMPLE: THE REVENUE OF EACH OF THE 30 COMPANIES IN THE DOW JONES INDUSTRIAL AVERAGE

POPULATION, BECAUSE IT IS A COLLECTION OF ALL THE 30 COMPANIES

POPULATION OR SAMPLE: THE FINAL SCORE OF EACH GOLFER IN A TOURNAMENT

POPULATION, BECAUSE IT IS A COLLECTION OF ALL THE GOLFERS' SCORES IN THE TOURNAMENT

IDENTIFY POPULATION AND SAMPLE: A SURVEY OF 12,082 US ADULTS FOUND THAT 45.5% RECEIVED AN INFLUENZA VACCINE FOR A RECENT FLU SEASON.

POPULATION: COLLECTION OF THE IMMUNIZATION STATUS OF ALL ADULTS IN THE US SAMPLE: COLLECTION OF THE IMMUNIZATION STATUS OF THE 12,082 US ADULTS SURVEYED

IDENTIFY POPULATION AND SAMPLE: A SURVEY OF 1015 US ADULTS FOUND THAT 32% HAVE HAD TO PUT OFF MEDICAL CARE FOR THEMSELVES OR THEIR FAMILY IN THE PAST YEAR DUE TO THE COST.

POPULATION: COLLECTION OF THE RESPONSES IN ALL ADULTS IN THE US SAMPLE: COLLECTION OF THE RESPONSES OF THE 1015 US ADULTS SURVEYED.

POPULATION OR SAMPLE: THE CHOLESTEROL LEVELS OF 20 PATIENTS IN A HOSPITAL WITH 100 PATIENTS.

SAMPLE, BECAUSE IT IS A COLLECTION OF THE 20 PATIENTS OUT OF THE 100 PATIENTS IN THE HOSPITAL.

POPULATION OR SAMPLE: A SURVEY OF 500 SPECTATORS FROM A STADIUM WITH 42,000 SPECTATORS

SAMPLE, BECAUSE IT IS A COLLECTION OF THE 500 SPECTATORS WITHIN THE 42,000 SPECTATORS.

HOW IS A SAMPLE RELATED TO A POPULATION?

A SAMPLE IS A SUBSET OF A POPULATION

WHAT IS THE DIFFERENCE BETWEEN A PARAMETER AND A STATISTIC?

A PARAMETER IS A DESCRIPTION OF A POPULATION CHARACTERISTIC. A STATISTIC IS A NUMERICAL DESCRIPTION OF A SAMPLE CHARACTERISTIC.

DESCRIPTIVE STATISTICS

BRANCH OF STATISTICS THAT INVOLVES THE ORGANIZATION, SUMMARIZATION, AND DISPLAY OF THE DATA.

INFERENTIAL STATISTICS

BRANCH OF STATISTICS THAT INVOLVES USING A SAMPLE TO DRAW CONCLUSIONS ABOUT A POPULATION.

WHAT ARE THE TWO MAIN BRANCHES OF STATISTICS?

DESCRIPTIVE AND INFERENTIAL

T/F A SAMPLE STATISTIC WILL NOT CHANGE FROM SAMPLE TO SAMPLE

FALSE

T/F A POPULATION IS THE COLLECTION OF SOME OUTCOMES, RESPONSES, MEASUREMENTS, OR COUNTS THAT ARE OF INTEREST.

FALSE. A POPULATION IS THE COLLECTION OF ALL OUTCOMES, RESPONSES, MEASUREMENTS, OR COUNTS THAT ARE OF INTEREST

T/F A STATISTIC IS A NUMERICAL VALUE THAT DESCRIBES A POPULATION CHARACTERISTIC

FALSE. A STATISTIC IS A NUMERICAL MEASURE THAT DESCRIBES A SAMPLE CHARACTERISTIC.

T/F A SAMPLE IS A SUBSET OF A POPULATION

TRUE

T/F INFERENTIAL STATISTICS INVOLVES USING A POPULATION TO DRAW A CONCLUSION ABOUT A CORRESPONDING SAMPLE

TRUE

T/F IT IS IMPOSSIBLE FOR THE CENSUS BUREAU TO OBTAIN ALL THE CENSUS DATA ABOUT THE POPULATION OF THE UNITED STATES

TRUE