Stats Module 1

statistics

field of science and math that involves collecting, classifying, summarizing, analysing, organizing, and interpreting data

descriptive statistics

devoted to the organization, summarization, and description of data sets

inferential statistics

consists of procedures used to make inferences about population characteristics from information contained in a sample drawn from this population

population

the set of all measurements of interest to the investigator

sample

subset of measurements selected from the population of interest

variable

characteristic that changes or varies over time and/or for different individuals or objects under consideration

experimental unit

individual or object upon which a variable is measured

measurement or data value

results when a variable is actually measured on an experimental unit

univariate data

results when a single variable is measured on a single experimental unit

bivariate data

results when two variables are measured on a single experimental unit

multivariate data

results when more than two variables are measured on a single experimental unit

qualitative variable

measures a quality or characteristic on each experimental unit. often called categorical data

quantitative variable

measures a numerical quantity or amount on each experimental unit

discrete variable

can assume only a finite or countable number of values (e.g. number of students, number of gadgets owned, etc)

continuous variable

can assume the infinitely many values corresponding to the points on an interval. INFINITE DECIMALS, NOT INFINITE VALUES. (e.g. height and weight, COVID-19 recovery rate, distance from house to school)