INTRODUCTION TO STATISTICS

An Overview of Statistics

VOCABULARYData: consists of information coming

from observations, counts, measurements, or responses.

Statistics: the science of collecting, organizing, analyzing, and interpreting data in order to make decisions.

Population: The collection of ALL outcomes, measurements, or counts that are of interest.

Sample: a subset (or part) of the population

EX: Classifying Data SetsDetermine if the set is a population or a

sample. Explain your reasoning.14. The annual salary of each pharmacist

at a pharmacy.

15. The cholesterol levels of 20 patients in a hospital with 100 patients.

EX: Identifying Populations & SamplesID the population and the sample.26. A study of 33, 043 infants in Italy

was conducted to find a link between a heart rhythm abnormality and sudden infant death syndrome. (source: New England Journal of Medicine)

27. A survey of 1442 US adults found that 36% received an influenza vaccine for the current flu season. (source: Zogby International)

More Vocab!Parameter: a numerical description of a

POPULATION characteristic.Statistic: a numerical description of a

SAMPLE characteristic.There are 2 branches of Statistics…1. Descriptive Statistics: involves

organization, summarization, and display of data.

2. Inferential Statistics: involves using a sample to draw conclusions about a population.